Friday, August 14, 2009

1517

1517 = 37 x 41 (the product of two consecutive prime numbers).

1517 has two representations as a sum of two squares: 1517 = 192 + 342 = 262 + 292.

1517 is the hypotenuse of two primitive Pythagorean triples: 15172 = 1652 + 15082 = 7952 + 12922.

The sum of the decimal digits of 21517 is also a power of 2.

1517 divides the sum of the first 1517 Fibonacci numbers.

1517 was the record-breaking attendance at MAA’s MathFest 2009 in Portland, Ore.


Italian mathematician and Franciscan friar Luca Pacioli died in the year
1517.

Source:
Wikipedia
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