Numbers 2700-2799

A page of the Numeropedia - the Special Encyclopedia of Numbers

[1K…) * [2K…) * [3K…) * [4K…) * [5K…) * [6K…) * [7K…) * [8K…) *  [9K…)  & [10K] & [100K]

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2,700

[EECS]  2.7K(W) is one of standard numerical values for resistors (of tolerance class 5%).

[Math.]  Sum (in degrees) of all internal angles of a 17-side polygon.

2,701

[Math.]  A triangular number (sum of all integers from 1 to 73): 2701 = 1+2+…+72+73.

2,717

[World]  The world’s tallest skyscraper, Burj Khalifa, in Dubai, one of the seven emirates of the United Arab Emirates, is 828-meter (2717-foot) high. (January 04, 2010).

2,728

[Math.]  27282 = 7,441,984 = (744+1984)2.

27283 = 20,301,732,352 = (203+0173+2352)3.

2,729

[Math.]  A prime number, formed by 2 consecutive odd numbers. As is 2927.

[Math.]  27292 = 7,447,441.

2,730

[Math.]  The denominator of the Bernoulli numbers: B12 = 691/2730 and B24 = 236364091/2730…

2,737

[Trivia]  Tea was first drunk under the Chinese Emperor Shen-Nung (Thần Nông, in Vietnamese) around the year 2737 B.C.

2,739

[Math.]  11,093,796 = 3972×2793 = 6951×1596.

2,741

[Math.]  The 400th prime number.

2,743

Math.]  9,523,696 = 2743×3472 = 1456×6541.

2,744

[Math.]  143 = 23+33+53+73+83+93+103.

2,749

[History]  The official number of victims in the New York’s World Trade Center terrorist attack on 11 September 2001 (updated on 01/23/2004).

[Math.]  The 401st prime number. A prime number that the differences between any of its two digits is always prime.

2,753

[Math.]  A prime number whose 4 digits are the first 4 single-digit prime numbers: 2, 3, 5 and 7.

2,769

[Math.]  The ratio 13845/2769 = 5, using each of 9 digits 1-9 once, shows how to arrange a 9-book set on 2 shelves to mark the book #5.

2,772

[Math.]

7,683,984 = 1584×4851 = 27722

782432784 = 15984×48951 = 279722

78384320784 = 159984×489951 = 2799722

7839843200784 = 1599984×4899951 = 27999722

783998432000784 = 15999984×48999951 = 279999722

7839…9984320000784 = 159…999984×489…999951 = 279…9999722

...

2,775

[Math.]  A triangular number (sum of all integers from 1 to 74): 2775 = 1+2+…+73+74.

2,780

[Math.]  2780 = 18+27+36+45+54+63+72+81.

2,781

[Math.]  2781 = 09+18+27+36+45+54+63+72+81+90.

2,793

[Math.]  11,093,796 = 3972×2793 = 6951×1596.