Wednesday, March 10, 2010

53

53 is a prime number. It is also a Sophie Germain prime because 2 x 53 + 1 = 107, which is also a prime.

5 and 3 are the eighth and ninth decimal digits of pi.

53 has a representation as a sum of two squares: 53 = 22 + 72.

53 is the hypotenuse of a primitive Pythagorean triple: 532 = 282 + 452.

53 is the sum of five consecutive primes: 5 + 7 + 11 + 13 + 17 = 53.


The chemical element iodine has atomic number
53.

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