Wednesday, April 25, 2012

629

629 = 17 x 37.

629 is a brilliant number (A078972). It is a semiprime whose prime factors have the same number of decimal digits.

629 is a powerful number (A007532). It can be written as a sum of positive powers of its digits: 629 = 62 + 29 + 92.

629 is 2525 in base 6. It is 275 in base 16 and 125 in base 24.

629 has two representations as a sum of two squares: 629 = 22 + 252 = 102 + 232.

629 is the hypotenuse of two primitive Pythagorean triples: 6292 = 1002 + 6212 = 4292 + 4602.


Source: On-Line Encyclopedia of Integer Sequences

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