Tuesday, September 3, 2013

775

775 = 5 x 5 x 31.

775 is the smallest number whose ninth power has 26 digits.

775 is 1100000111 in base 2 and 11100 in base 5 (A033042). It is 30013 in base 4 and 3331 in base 6.

775 is a hypotenuse for which there exist two distinct integer triangles (A084646).

775 is a number n such that n and n2 (600625) have the same integer sum (19).

775 is the sum of five consecutive cubes (A217843): 775 = 33 + 43 + 53 + 63 + 73.


Source: What's Special About This Number?

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