Monday, March 4, 2013

1700

1700 = 2 x 2 x 5 x 5 x 17.

1700 is 11010100100 in base 2 (binary).

1700 is the generalized Catalan numer C(13, 4) (A039598).

1700 is 4646 in base 7. It is 2288 in base 9 and A0A in base 13.

1700 has three representations as a sum of two squares (A000443): 1700 = 102 + 402 = 162 + 382 = 262 + 322.


Source: What's Special About This Number?

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