Monday, November 12, 2012

1010

1010 = 2 x 5 x 101.

1010 has two representations as a sum of two squares: 1010 = 72 + 312 = 132 + 292.

1010 is the sum of two distinct powers of 10 (A052216 and A038444): 1010 = 103 + 101.

1010 is the number of ways to tile a 5 x 12 rectangle with pentominoes.

1010 is 2642 in base 7 and 1342 in base 9. It is 262 in base 21.

1010 is the number of primes less than 104 that do not contain the digit 0 (A091634).


Source: What's Special About This Number?

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