Wednesday, April 15, 2009

41

41 is a prime number.

41 is the smallest number such that the sum of its divisors equals three times its reverse: 41 + 1 = 3 x 14.

41 is the smallest prime such that the sum of factorials of its distinct digits is a square number: 4! + 1! = 52.

41 has a representation as a sum of two squares: 41 = 42 + 52.


Accused murderess Lizzie Borden allegedly gave her father 41 whacks on Aug. 14, 1892, in Fall River, Mass.

Source: Prime Curios!
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