The Quite Incredible Number List: 6401-6500
| 6401 | According to this maths worksheet, the total of the average thicknesses of the layers of the Earth is 6,401 km. | Big Martin |
| 6402 | The World Customs Organization's harmonised system code 6402 refers to other footwear with outer soles and uppers of rubber or plastics. | AlmondFacialBar |
| 6403 | No. NCTC 6403 from Public Health England's bacteria collection is Streptococcus dysgalactiae, which was isolated from a suckling pig. | Big Martin |
| 6404 | Grade Code 6404 of Feidhmeannacht na Seirbhíse Sláinte (otherwise known as the HSE) defines the qualifications needed for someone to work as a healthcare chaplain in said Irish public health system. | AlmondFacialBar |
| 6405 | The Hawker Hunter GA11 on display at the Bentwaters Cold War Museum in Suffolk has an empty weight of 6.405 kg (or 6405 g). | Big Martin |
| 6406 | 6406 is the code number for an Inclusion Melbourne training organisation. | Awitt |
| 6407 | Lego System 6407 is a fire chief. The minifig has an impressive handlebar moustache. | AlmondFacialBar |
| 6408 | 6408 Nissans were clamped in the UK for not being taxed during the time period of April 2022 – May 2023. | Ed. |
| 6409 | A total of 6409 fines for Covid breaches were issued by Northumbria Police between March 27 2020 and April 18 2021. | Brock |
| 6410 | According to this site it's 6,410 miles from Jerusalem to Rio de Janeiro. | Big Martin |
| 6411 | The Trebnitz-Leipzig railway in eastern Germany is Deutsche Bahn line 6411. | Brock |
| 6412 | 6412 is the number of a preserved loco built at Swindon in 1934. | Awitt |
| 6413 | There are 6413 primes less than 64,000. | Brock |
| 6414 | El Condor is a 6,414 metre high mountain in Argentina and is the 22nd highest mountain in the Andes. | Big Martin |
| 6415 | The six-four-one-five (or vi-IV-I-V) chord progression can be written as Am-F-C-G in the key of C major, or its equivalent in other keys. It has been dubbed the "sensitive female chord progression" by Boston Globe columnist Marc Hirsh, and has been used in a wide range of popular music. The earliest known example appears to be Scott McKenzie's 1967 hit "San Francisco (Be Sure To Wear Flowers In Your Hair)". | Brock |
| 6416 | 6416 is the 'type' number for a desk top computer. | Awitt |
| 6417 | A squarefree number is one not divisible by a perfect square (other than 1). The first 20 squarefree numbers are 1, 2, 3, 5, 6, 7, 10, 11, 13, 14, 15, 17, 19, 21, 22, 23, 26, 29, 30, 31. If you add together the their squares, the total is 6417. | Brock |
| 6418 | Prior to being on Apollo 11, Neil Armstrong had piloted the X-15 rocket ship at 6,418 kilometres per hour on one occasion. | Big Martin |
| 6419 | B-6419 was the registration number of the aircraft involved in Sichuan Airlines Flight 8633, which was forced to make an emergency landing at Chengdu Shuangliu International Airport after the cockpit windshield failed. The incident has been adapted into the 2019 film The Captain. | Brock |
| 6420 | In 2012, BASE jumper Valery Rozov set a world record after jumping from a launch pad at 6,420 metres on Shivling mountain in a wing suit. | Big Martin |
| 6421 | There were 6421 property crimes reported for every 100,000 people in Oakland, California in 2019 - more than three times the average for the state. | Ed. |
| 6422 | In April 2021, 17-year-old Megan Fisher was mauled to death by three dogs at 6422 Gentleman Drive, near Muncey, southwest of London, Ontario. | Brock |
| 6423 | The Western Australian Museum's artefact BAT6423 is a timber from the wreck of the Dutch ship Batavia, which struck a reef in the Houtman Abrolhos in 1629. | Big Martin |
| 6424 | Image 6424 in the Hitchcock Gallery is this publicity photo from "Stage Fright". | Brock |
| 6425 | ISO 6425 is the standard covering diving watches. | Big Martin |
| 6426 | 6426 is the item number for a nautical flag representing B (Baker). | Awitt |
| 6427 | Lego Duplo part 6427 is an orange suitcase. | Big Martin |
| 6428 | The B6428 is a semi-urban road in south Yorkshire, running from Barugh Green, on the outskirts of Barnsley, to Featherstone, near Pontefract. | Brock |
| 6429 | A small rope-finish digeridoo is number 6429 in the DigeridooBreath catalogue. | Big Martin |
| 6430 | In this photo, pannier tank no.6430 waits at Danycoed Halt on the Gwili Steam Railway in south-west Wales. | Brock |
| 6431 | The July/August 1997 edition of Archaeology contained an article about worked oak timbers discovered by divers off Hayling Island being radiocarbon dated to 6,431 years old. | Big Martin |
| 6432 | 6432 is divisible by each of its digits: 6432/6 = 1072, 6432/4 = 1608, 6432/3 = 2144, 6432/2 = 3216 | Brock |
| 6433 | Arriva Southern 6433 GN04UFA is a Volvo B7TL Transbus ALX400 plying its trade in Chatham. | AlmondFacialBar |
| 6434 | HD 6434 is a yellow dwarf star in the constellation of Phoenix and has been named Nenque. | Big Martin |
| 6435 | In April 2021 the Watercress Line in Hampshire held its Spring Steam Gala, featuring the GWR 6435 tank engine built in 1937, courtesy of the Bodmin and Wenford Railway. | Brock |
| 6436 | The Esthesia 6436 bathtub has 38 massage jets, a heated backrest, and various other fun features to enliven your personal hygiene experience. | AlmondFacialBar |
| 6437 | Taban Air flight 6437 crashed at Mashhad in Iran on January 24th 2010. Thankfully, all 170 people on board escaped. | Big Martin |
| 6438 | In 1892-1895, Albert A. Michelson defined the ångström so that the red line of cadmium was equal to 6438.47 ångströms. (Today the unit is defined as exactly 0.1 nanometres.) | Brock |
| 6439 | According to this website, the B6439 as shown on a 1940 map of Newcastle appears to really be the B6431. | Big Martin |
| 6440 | In August 2021, a miniature bottle of 1919 Springbank whisky sold for £6440 at auction. | Ed. |
| 6441 | EHC 6441 is a British Government health certificate required for the export of laboratory rodents. | Big Martin |
| 6442 | Burmatex infinity 6442 fossil floor covering is available from Floormart at £17.86. | Brock |
| 6443 | The Laser 6443 is a track rod end removal socket - whatever one of those might be! | Big Martin |
| 6444 | 6444 is the smallest number whose fifth power begins with five identical digits: 64445 = 11,111,627,111,310,388,224 | Brock |
| 6445 | Greenamity's tree number 6445 is a Tejeyeque planted in Colombia in 2015. | Big Martin |
| 6446 | In the Whyte notation for describing locomotive wheel arrangements, a 6-4-4-6 is one with six leading wheels, two sets of four driving wheels, and six trailing wheels. Only one such locomotive was ever produced, the Pennsylvania Railroad's sole class S1 of 1939. | Brock |
| 6447 | Buxton New Road in Cheshire is in the SK11 0 postcode area for 6,447 metres and in the SK10 1 area for the remaining 71 metres. | Big Martin |
| 6448 | Burda Style sewing pattern B 6448 is for a plus size summer dress in knee or ankle length. | AlmondFacialBar |
| 6449 | Look for a prime p such that 2p+1, 4p+3, 6p+5, 8p+7 are all primes. The smallest is p=2 (5, 11, 17, 23). The next smallest is p=6449 (12899, 25799, 38699, 51599). | Brock |
| 6450 | According to this Wikipedia entry, the zodiacal age of Gemini began in c6450 BC. | Big Martin |
| 6451 | Concentrated solar power had a global total installed capacity of 6451 megawatts in 2019. | Brock |
| 6452 | In 2020, the Southend Foodbank was feeding 6,452 people. | Big Martin |
| 6453 | The world record for fastest railed vehicle is held by a rocket sled at Holloman Airforce Base, NM, that accelerated a 87 kg payload to 2886 metres per second, which scales up to 6,453 mph. | AlmondFacialBar |
| 6454 | At the time of the 2011 census, Portrush in County Antrim had a population of 6,454. | Big Martin |
| 6455 | 6455 is a Friedman number, meaning that it can be represented using only its own digits and the symbols + - × / ( ), plus exponentiation: 6455 = (64 – 5) × 5 Because the digits are in the same order as in the original number, it's known as a "nice" or "orderly" Friedman number. | Brock |
| 6456 | The deepest known shipwreck is that of the USS Johnston, at 6,456 metres. The Johnston was a destroyer (not a battleship) sunk by the Japanese Navy in 1944. | Big Martin |
| 6457 | 6457 instances of knife crime resulted in sentencing in London last year. | Brock |
| 6458 | The first British naval loss of WW1 was the 6,458 GRT steam tanker San Wilfrido, which was sunk by a German-laid mine in the North Sea the day before Britain declared war. | Big Martin |
| 6459 | The 6459th prime is 64591. | Brock |
| 6460 | The Lionel Lines model railway crane wagon produced in the 1950s bears the number 6460. | Big Martin |
| 6461 | Zone 6 of the road numbering system seems particularly prone to accidental duplications. There's a very short B6461 in Ollerton, Nottinghamshire, but it has a much longer twin in the Scottish Borders, running from Kelso to Berwick-upon-Tweed (and crossing into England for the last mile or so). | Brock |
| 6462 | In 2019, the Ludlow & District Beekeepers' Association had an income of £6,462. | Big Martin |
| 6463 | Aluminium alloy 6463 is a medium strength alloy, highly suitable for anodising and polishing, or brightening. This makes it suitable for retail applications like shop fittings and trims. | Brock |
| 6464 | The callsign of the Greenpeace vessel MV Esperanza is PD 6464. | Big Martin |
| 6465 | There were 6465 candidates for election to the 90 local bodies in Thiruvananthapuram, Kerala, India on December 8 last year. | Brock |
| 6466 | The T Rex album Electric Warrior from 1971 was Reprise record RS 6466 for its US release. | Big Martin |
| 6467 | As at May 17 2021, the currently injured Harry Maguire, described by Ole Gunnar Solskjaer as "more or less ever-present", had played 6467 league minutes out of a possible 6660 for Manchester United. | Brock |
| 6468 | Zolpidem Tartrate is available as a pink pill marked 6468. | Big Martin |
| 6469 | 6469 is prime, but all numbers formed by permutations of subsets of its digits are non-prime (4, 6, 9, 46, 49, 64, 66, 69, 94, 96, 466, 469, 496, 646, 649, 664, 669, 694, 696, 946, 964, 966, 4669, 4696, 4966, 6496, 6649, 6694, 6946, 6964, 9466, 9646, 9664). There are only 14 numbers with this property, of which 6469 is the highest. | Brock |
| 6470 | The vehicle bearing the UK registration G6470 is a Burrell showman's road locomotive built in 1915 and named Nero by its original owners. | Big Martin |
| 6471 | The Danish politician Morten Dahlin was elected to the Folketing (parliament) in 2019 with 6471 votes. | Brock |
| 6472 | The leaflet for the Towers and Turrets walk in Bolton recommends using the B6472 if arriving by car. | Big Martin |
| 6473 | The Untersberg is the northernmost massif of the Berchtesgaden Alps, a prominent spur straddling the border between Berchtesgaden, Germany and Salzburg, Austria. The highest peak of the table-top mountain is the Berchtesgaden Hochthron at 6473 feet (1973 m). | Brock |
| 6474 | Hansa Creation 6474 is a cuddly toy of a life size Komodo dragon. | AlmondFacialBar |
| 6475 | Messier 7 or M7, also designated NGC 6475 and sometimes known as the Ptolemy Cluster, is an open cluster of stars in the constellation of Scorpius. It was first recorded by Ptolemy in 130 AD. | Brock |
| 6476 | Fleischmann product 6476 is a locomotive shed kit for HO gauge model railways. | Big Martin |
| 6477 | Mumps Roundabout is at the junction of the A62, the A669 and the B6477 in Oldham. | Brock |
| 6478 | 6478 is the code number for this pair of boots. | Awitt |
| 6479 | Minor planet 6479 is named Leoconnolly after Leo P. Connolly, American astronomer and teacher at California State University. | Brock |
| 6480 | The track of the new Eiger Express is 6,480 metres long. | Big Martin |
| 6481 | 6481 is the smallest prime formed from the concatenation (in ascending order) of two consecutive squares. | Ed. |
| 6482 | At www.achurchnearyou.com, St Barnabas Little Ilford, is numbered 6482. | Strawberry |
| 6483 | 6483 is the postcode of Ona, which consists of two tiny islands off the coast of Norway. | Brock |
| 6484 | Te Ara (The Encyclopaedia of New Zealand) document 6484 is about Frying Pan Lake at Waimangu. | Big Martin |
| 6485 | The national park in Kien Giang, Vietnam, has built a digital map for fighting forest fires. As of the end of 2020, its forest area neared 6485 hectares. | Brock |
| 6486 | Mount Tanigawa is a 1,977 m (6,486 ft) mountain on the border of Gunma Prefecture and Niigata Prefecture in Japan. It is one of the 100 famous mountains in Japan. | Strawberry |
| 6487 | In the year to 31 March 2020, 6487 employees of Her Majesty's Revenue and Customs (HMRC) declared themselves as Black, Asian and Minority Ethnic (BAME), a proportion of 10.2% of the total workforce. | Brock |
| 6488 | 6488 is the code number for Playmobil's 'Three Egyptian soldiers'. | Awitt |
| 6489 | 6489 has an unusual property which is only shared by three other numbers less than 109. List all the divisors of 6489: 1, 3, 7, 9, 21, 63, 103, 309, 721, 927, 2163, 6489.
The largest difference between consecutive divisors is 6489-2163 = 4326. This is equal to the sum of all the divisors, except 1 and 6489 itself: 3+7+9+21+63+103+309+721+927+2163 = 4326 | Brock |
| 6490 | In September 2020, PV Magazine reported that India could add 6,490 electric buses in the next 2 years. | Big Martin |
| 6491 | A total of 39 people - all four crew members on board and 35 residents on the ground - were killed on 16 January 2017, when Turkish Airlines Flight 6491 crashed in a residential area while attempting to land in thick fog at Manas International Airport, Bishkek, Kyrgyzstan. | Brock |
| 6492 | The Inergen Extinguishing System 6492 sign is a warning not to enter a building where said fire extinguishing system has been deployed. | Big Martin |
| 6493 | Solaris is a variety of grape used for white wine. It was created in 1975 at the grape breeding institute in Freiburg, Germany by Norbert Becker, who crossed the variety Merzling (which is Seyve-villard 5276 x (Riesling x Pinot gris)) as mother vine with Gm 6493 (which is Zarya Severa x Muscat Ottonel) as the father vine. | Brock |
| 6494 | Bob Hamilton Photography's image of the month for March 2018 was Sunrise and Alpenglow on Khang Bum (6,494 metres). | Big Martin |
| 6495 | Entry #6455 describes the "orderly Friedman numbers" - the ones that can be represented using only their own digits, in the same order, and the symbols + - × / ( ), plus exponentiation. If you also allow the use of the square root, then you can find additional examples like 6495 = (64 + √9) × 5 Dr Colin Rose has christened such numbers the "radical narcissistic numbers", and there are only fourteen of them less than 10,000. | Brock |
| 6496 | Swiftreg have XKZ 6496 on sale as a cherished plate for £288 including fees. It strikes me that XKZ, whilst not impossible, is a highly unlikely set of initials for someone to have. | Big Martin |
| 6497 | The ETA Unitas 6497-1 hand-wound watch movement has been built since the 1960s and served first as a pocket watch movement. | Brock |
| 6498 | Vol 368, Issue 6498 of Science magazine, was published in June 2020. | Strawberry |
| 6499 | Jethro Tull's compilation album Living In The Past is available from Amazon on vinyl as catalogue number 6499 520/21. | Big Martin |
| 6500 | The Sony α6500 is a compact digital camera announced on 6 October 2016. | Brock |
