Wednesday, July 9, 2014

2017

2017 is a prime number.

2011 and 2017 are a sexy prime pair (differing by 6).

2017 is an odd central polygonal number (A193867).

2017 is the sum of four consecutive composite numbers (A060329).

2017 is a prime that remains a prime when a single "7" digit is inserted between any two adjacent digits (A217065).

2017 is a prime with digit sum 10 (A107579).

2017 has a representation as a sum of two squares: 2017 = 92 + 442.

2017 is the hypotenuse of a primitive Pythagorean triple: 20172 = 7922 + 18552.

2017 divides 797 - 1.


Source: OEIS

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