Monday, December 22, 2008

1717

1717 = 17 x 101.

1717 has two representations as a sum of two squares: 1717 = 62 + 412 = 142 + 392.

1717 is the hypotenuse of two primitive Pythagorean triples: 17172 = 4922 + 16452 = 10922 + 13252.

1717 is a divisor of 1008 - 1.


French mathematician and encylopaedist Jean le Rond d'Alembert was born on Nov. 16,
1717.

Photo credit: MathDL Portrait Gallery

Source: Number Gossip

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