The Quite Incredible Number List: 1-100
| 1 | 1 is the only positive integer that is neither prime nor composite. | Sophie.A |
| 2 | 2 is the only number whose factorial is prime. | principessa |
| 3 | 3 is the resin identification code used in recycling to identify polyvinyl chloride. | cherrycoke |
| 4 | Channel 4 was launched on 2 November 1982 with the programme Countdown. | Sophie.A |
| 5 | Five (stylised as 5ive) are a British boy band from London consisting of members Sean Conlon, Ritchie Neville, and Scott Robinson. The group were mostly known as a five-piece. | TheElephant |
| 6 | 6 is the only number that is equal both to the sum of its positive factors smaller than itself
(1 + 2 + 3) and to the product of its positive factors smaller than itself (1 x 2 x 3). | Sophie.A |
| 7 | "Seven Ate Nine" is the name of a sandwich shop in Bangor, County Down, Northern Ireland. | Ed., suggested by cherrycoke |
| 8 | 8 is considered by the Chinese to be a lucky number. | Sophie.A |
| 9
|
| 1 x 9 + 2 = 11 |
| 12 x 9 + 3 = 111 |
| 123 x 9 + 4 = 1111 |
| 1234 x 9 + 5 = 11111 |
| 12345 x 9 + 6 = 111111 |
| 123456 x 9 + 7 = 1111111 |
| 1234567 x 9 + 8 = 11111111 |
| 12345678 x 9 + 9 = 111111111 |
| bemahan |
| 10 | 10 = 1 + 2 + 3 + 4 | Sophie.A |
| 11 |
| (1) Think of a whole number, and square it. |
| (2) Multiply together the number before and the number after the resulting square. |
| (3) If the last digit of the new number is 4 or 9, add 3; if the last digit is not 4 or 9, add 2. |
| (4) Multiply by 20 and subtract 29. |
The last two digits of the final number will always be 11. | Vera C |
| 12 | Think of a number other than 1; multiply by 3; subtract 3; multiply by 4; divide by the number that is 1 less than than the original number you thought of. The final answer is always 12. | Sophie.A |
| 13 | 1/13 = 0.076923076923076923... (rational periodic infinite decimal). 76923 x 13 = 999999, and multiplying the periodic number 76923 by successive multiples of 13 gives the values 1999998, 2999997, 3999996, 4999995, 5999994, 6999993, 7999992, 8999991 and 9999990. | bemahan |
| 14 | The Dutch footballer Johan Cruyff was famous for wearing a number 14 shirt. | Sophie.A |
| 15 | 15 = 1 + 2 + 3 + 4 + 5. | bemahan |
| 16 | Jane Austen was born on 16 December 1775. | Sophie.A |
| 17 | "Seventeen" was the original name of The Beatles song "I Saw Her Standing There". | bemahan |
| 18 | Until 2000, only 18 of the moons of Saturn had been given names. | Sophie.A |
| 19 | The Wimbledon tennis championships are held at The All England Lawn Tennis Club, Church Road, Wimbledon, London SW19 5AE, England. | Vera C |
| 20 | An icosahedron is a solid figure with 20 plane faces. | Sophie.A |
| 21 | 21 = 1 + 2 + 3 + 4 + 5 + 6. | Vera C |
| 22 | An adult human skull has 22 bones (1 occipital, 2 parietal, 1 sphenoid, 1 ethmoid, 2 inferior nasal conchae, 1 frontal, 2 nasal, 2 lacrimal, 2 temporal, 2 maxillae, 2 zygomatic, 1 vomer, 2 palatine, 1 mandible). | Sophie.A |
| 23 | The first 6 digits of pi (3.14159) add up to 23: 3 + 1 + 4 + 1 + 5 + 9 = 23. | principessa |
| 24 | Although 24 hours is the length of a calendar day, a mean solar day is in fact 24.0000006 hours long, and a sidereal day is only 23.9344696 hours long. | Ed., suggested by bobwilson |
| 25 | Initiative 901 in Washington State states that "smoking is prohibited within a presumptively reasonable minimum distance of twenty-five feet from entrances, exits, windows that open, and ventilation intakes that serve an enclosed area where smoking is prohibited so as to ensure that tobacco smoke does not enter the area through entrances, exits, open windows, or other means". | Posital |
| 26 | According to a survey reported in the Daily Telegraph in 2009, 26th October is the most unproductive day of the year. | stee |
| 27 | 27 is the largest number equal to the sum of the digits of its cube: 273 = 19863; 1 + 9 + 8 + 6 + 3 = 27. | Ed. |
| 28 | In the Gregorian calendar, 75.75% of Februarys have just 28 days. | Ed., based on cherrycoke |
| 29 | Eric Wimp, better known as Bananaman in the comic strip, lived at 29 Acacia Road. | stee |
| 30 |
There are 30 tracks on the self titled album by The Beatles (AKA The White Album) | stee |
| 31 | Haydn's Symphony No.31, nicknamed "Hornsignal", and Mozart's Symphony No.31, nicknamed "Paris", are both in the key of D major. | Sophie.A |
| 32 | Pure water freezes at 32°F. | Vera C |
| 33 | Oregon became the 33rd state of the USA on February 14, 1859. | stee |
| 34 | One of the fundamental constants in physics, Planck's constant has a value of 6.626 × 10−34 J s. | Sophie.A |
| 35 | 35 is the minimum age for a person to be eligible to be US President. | Vera C |
| 36 | 36 is both the sum of the first 8 positive whole numbers (1+2+3+4+5+6+7+8) and the sum of the first 9 digits of pi (3+1+4+1+5+9+2+6+5). | Sophie.A |
| 37 | There are 37 slots on a European roulette wheel. | Ed. |
| 38 | William Shakespeare wrote at least 38 plays between 1590 and 1612. | stee |
| 39 | The 39 Steps (1935) is a film by Alfred Hitchcock based on a novel by John Buchan. | Sophie.A |
| 40 | WD 40 stands for Water Displacement - 40th Attempt (it was the 40th formula tried by the inventor). | stee |
| 41 | 41 = 2 + 3 + 5 + 7 + 11 + 13, the sum of the first 6 prime numbers. | Sophie.A |
| 42 | According to The Hitch-Hiker's Guide To The Galaxy, 42 is the meaning of life, the universe and everything. | Bondee |
| 43 | 43 is the atomic number of technetium, the only element lighter than uranium that does not occur naturally on Earth (except as a short-lived by-product of naturally occurring radioactivity). | Vera C |
| 44 | Barack Obama was the 44th President of The United States, not including the 16 Presidents of The United States in Congress Assembled. (Strictly speaking, Obama is the 43rd individual to be President, thanks to Grover Cleveland being both number 22 and 24.) | stee |
| 45 | "The Forty-Five" is the nickname given to the Jacobite rising of 1745. | Ed. |
| 46 | The Julian calendar was introduced in 46 BC. | Sophie.A |
| 47 | The number 47 has historical implications to Pomona College in Claremont, California, and has been incorporated into various aspects of campus life. Notable 47 sightings include the fact that Pomona is located off of exit 47 of Interstate 10, and that the largest residential building on campus, Mudd-Blaisdell (formally Florence Carrier Blaisdell and Della Mullock Mudd Hall, a title with 47 characters), was completed in 1947 and contains a staircase with 47 balusters. | Ed. |
| 48 | A cube has 48 symmetries (its symmetry group being the direct product of the symmetric group of degree 4 and the cyclic group of order 2). | Sophie.A |
| 49 | The sum of the digits of the square of 49 is the square root of 49 (2 + 4 + 0 + 1 = 7). | Ed. |
| 50 | Hawaii is the 50th state of the USA. | Sophie.A |
| 51 | "Playin' solitaire 'til dawn with a deck of 51/Smokin' cigarettes and watchin' Captain Kangaroo/Now don't tell me, I've nothin' to do" are lyrics from Flowers on the Wall by the Statler Brothers. | bobwilson |
| 52 | There are 52 white keys on a modern piano. | Ed. |
| 53 | 53 is the atomic number of iodine, the only halogen element that is solid at room temperature. (Or rather the only non-radioactive halogen, thus excluding astatine.) | Q.I. George |
| 54 | 54 is a novel by Wu Ming, first published in Italian in 2002. | stee |
| 55 | 55 is the sum of the squares of the first 5 positive integers. | Sophie.A |
| 56 | Kimberley Vlaminck had 56 stars tattooed on her face, then claimed she didn't ask for that many and had slept whilst they were done. She then admitted that she had asked for all 56 and lied because her father was 'furious'. | stee |
| 57 | Heinz 57 is a shortened, popular form of the '57 Varieties' slogan of Pittsburgh's H.J. Heinz Company. | Vera C |
| 58 | The 58 Chevy is a nickname for the 1958 Chevrolet, which is thought by some to have failed to build on its predecessor's popular success. | PDR |
| 59 | At the age of 59, Satchel Paige was the oldest ever Major League Baseball player. | zomgmouse |
| 60 | The Babylonians used a base-60 number system. | Vera C |
| 61 | The Man In Seat Sixty-One is an online train and ferry guide. | Big Martin |
| 62 | In March 2010 62% of the eligible population of Iraq turned out to vote, despite threats, and actual acts, of violence. This was higher than the turnout in both the 2001 and 2005 UK elections. | tp |
| 63 | Queen Victoria reigned for 63 years, 7 months and 2 days. | Strawberry |
| 64 | When I'm Sixty-Four is a song by the Beatles. | Posital |
| 65 | "At three score and five, I'm very much alive/I've still got the jive to survive with the heroes and villains" are lyrics from Heroes and Villains by the Beach Boys. | Strawberry |
| 66 | Sixty-six is an Austrian card game played with a deck of only 24 cards, also known by its German name Sechsundsechzig. | dr bartolo |
| 67 | Around the year 67 CE, Saint Peter the Apostle is supposed to have been crucified upside-down at his own request. | sjb |
| 68 | ALGOL-68 is an imperative computer programming language. It is short for Algorithmic 1968. | tp |
| 69 | The Messier object M69 is a magnitude 9.0 globular cluster in the constellation Sagittarius. | Strawberry |
| 70 | 70 is the atomic number of ytterbium, a lanthanide. | cherrycoke |
| 71 | Indra in the Hindu Pantheon lives for 71 eons. | wilftest |
| 72 | It is believed that Confucius had 72 disciples. | Strawberry |
| 73 | Haydn's Symphony No.73, nicknamed "La Chasse", and Brahms's Symphony No.2, Op.73, are both in the key of D major. | Albert Terry |
| 74 | In a 2010 study it was found that we are at our happiest when we are 74 years of age. It drops steadily from your teens until you reach 40, then it is in a trough for the next six years. After which it climbs steadily to a peak at 74 before dropping off as physical and mental illness kicks in. | tp |
| 75 | 75 is the département number of the city of Paris. | Strawberry |
| 76 | In 1981 Steven Callahan spent 76 days in a liferaft, drifting on the Atlantic Ocean before being rescued. | GoldieOGilt |
| 77 | 77 is the largest number that cannot be written as a sum of distinct numbers whose reciprocals sum to 1. | 'yorz |
| 78 | There are 78 tarot cards. | Strawberry |
| 79 | Liz Taylor died at the age of 79. | 'yorz |
| 80 | 80 is the upper age limit for cardinals to vote in papal elections. | Strawberry |
| 81 | 1/81 = 0.012345679012345679... (note that there's no "8" in the recurring decimal representation). | Ed. |
| 82 | 82 is a happy number | 'yorz |
| 83 | In some Jewish communities, when someone reaches 83 they may celebrate a second bar mitzvah. | Strawberry |
| 84 | 84 is the sum of the first seven triangular numbers (making it a tetrahedral number), as well as the sum of a twin prime (41 + 43). Being thrice a perfect number, 84 is itself a semiperfect number. | nicholasjwest |
| 85 | Arabigere 85 is a village in India. | Strawberry |
| 86 | Darjeeling, India, is where Tenzing Norgay died in '86. He was in peak physical condition. | Subwaytion |
| 87 | There is no international dialling code +87. Numbers beginning with +87 are used for international direct dial phone calls to Inmarsat and other services. | Strawberry |
| 88 | There are 88 constellations, as defined by the International Astronomical Union. | Southpaw |
| 89 | 89 is the département number of Yonne. | Strawberry |
| 90 | Uniquely among the Psalms, Psalm 90 is credited to Moses. | Iamtheelephant616 |
| 91 | 91 is the number for international direct dial phone calls to India. | Strawberry |
| 92 | The 92 Club is a society of fans who have attended a home match of all 92 current member clubs of the Premier League and English Football League in England and Wales. | Ed. |
| 93 | The sun is approximately 93 million miles away from the Earth. | Strawberry |
| 94 | Haydn's Symphony No.94 in G Major is nicknamed "Surprise" in English and "Mit dem Paukenschlag" in German. | Albert Terry |
| 95 | The 95 Theses on the Power and Efficacy of Indulgences (Latin: Disputatio pro declaratione virtutis indulgentiarum), commonly known as The Ninety-Five Theses, was written by Martin Luther in 1517 and is widely regarded as the primary catalyst for the Protestant Reformation. | Sophie.A |
| 96 | US Route 96 is a north-south route in Texas. | Strawberry |
| 97 | There were 97 victims of the Hillsborough disaster, including Andrew Devine, who died 32 years later from irreversible brain damage. | Ed. |
| 98 | The code for international direct dial phone calls to Iran is +98. | Strawberry |
| 99 | Ninety-nine is the shared name of two completely different card games, one invented by David Parlett, and the other of unknown origin. | dr bartolo |
| 100 | In the UK, 100 is the operator telephone number. | Strawberry |
