Saturday, January 1, 2011

A Prime New Year

2011 is not only a prime number, but it's the sum of three consecutive prime numbers (661+673+677), and also the sum of eleven consecutive primes (157+163+167+173+179+181+191+193+197+199+211).

If you reverse the digits of 2011 (1102) and square it (11022 = 1214404), you get the reverse of the digits when you square 2011 itself (20112 = 4044121).

2011 is 28 in base 5. (Any ideas on why we typically use base 10?)

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