Numbers 3100-3199

A page of the Numeropedia - the Special Encyclopedia of Numbers

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3,106.75

[Tech.]  The world’s largest diamond, Cullinan, found in South Africa in 1905, was weighed 3106.75 carats uncut. It was cut into the Great Star of Africa (530.2 carats), the Lesser Star of Africa (317.4 carats) and 104 other diamonds. They now form part of the British crown jewels.

3,114

[Calendar] The “Long Count”, a Maya calendar system, tracking the duration of “great cycles” of time shows that the current cycle began on August 13, 3114 B.C and ends on Maya’s “13.0.0.0.0”, which is December 23, 2012.

[Math.]  31142 = 9,696,996, having only 2 different digits.

3,119

[Math.]  Circular prime numbers: all 4 numbers 1193, 1931, 9311 and 3119 are prime.

A right-truncatable prime number: self, 311, 31 and 3 are prime numbers.

3,121

[Math.]  A prime number.

[Music]  Album “3121” debuted in March 2006 as Billboard No.1, the first of Prince’s career.

3,124

[Sport]  One of soccer’s possible lineup tactics formations: 4-2-4 (4 defenders, 2 midfielders and 4 forwards). A slightly modified defenders line makes: 1-3-2-4 (1 sweeper), or 3-1-2-4 (1 stopper). A slightly modified forwards line makes: 4-2-3-1 (1 striker).

3,125

[Math.]  A power of 10 that can be represented as the product of 2 numbers, which have no digit 0: 105 = 100,000 = 25×55 = 32×3125.

3,133

[Sport]  One of soccer’s possible lineup tactics formations: 4-3-3 (4 defenders, 3 midfielders and 3 forwards). A slightly modified defenders line makes: 1-3-3-3 (1 sweeper), or 3-1-3-3 (1 stopper). A slightly modified forwards line makes: (Christmas Tree) 4-3-2-1 (1 striker) or 4-3-1-2 (2 strikers).

3,136

[Math.]  562 = 3,136 and if all digits are decremented (except the exponent) by 1: 452 = 2,025.

3,137

[Math.]  A prime number, formed by 2 consecutive prime numbers 31 and 37.

A bi-truncatable prime number: self, 313, 31 and 3 are prime numbers and so are 137, 37 and 7.

3,142

[Geology]  The number of counties in 50 states of the U.S.

[Sport]  One of soccer’s possible lineup tactics formations: 4-4-2 (4 defenders, 4 midfielders and 2 forwards). A slightly modified defenders line makes: 1-3-4-2 (1 sweeper), or 3-1-4-2 (1 stopper). A slightly modified forwards line makes: 4-4-1-1 (1 striker).

3,148

[Math.]  31482 = 9,909,904.

3,151

[Sport]  One of soccer’s possible lineup tactics formations: 4-5-1 (4 defenders, 5 midfielders and 1 forward). A slightly modified defenders line makes: 1-3-5-1 (1 sweeper), or 3-1-5-1 (1 stopper). A slightly modified midfielders line makes: 4-2-3-1 (1 striker) or (Christmas Tree) 4-3-2-1 (1 striker).

3,153

[Math.]  3153 = 11+33+55 = 12+33+55.

3,154

[Math.]  3154 = 21+33+55.

3,155.6952

[Measure]  The number of seconds in a micro-century (by currently-used Gregorian calendar, or 52m 35.6952s. By Julian calendar, it is 3155.76 seconds = 52m 35.76s. It is about the length of a standard lecture 50-60 minutes.

3,156

[Math.]  3156 = 22+33+55.

3,160

[Math.]  A triangular number (sum of all integers from 1 to 79): 3160 = 1+2+…+78+79.

3,166

[World]  The ISO-3166 Standard list is for country codes in 2 or 3 letters and in 3-digit numbers.

3,180

[Money]  The number of stocks listed in the stock market NASDAQ composite (as of May 2007).

3,184

[Math.]  The Fibonacci number F3184 is an apocalypse number, which has 666 digits.

3,186

[Math.]  Two multiples of number 3186, 3186×5 = 15,930 and 3186×9 = 28,674, use each of 10 digits 0-9 once.

3,187

[Math.]  A prime number.  The ratio 25496/3187 = 8, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #8.