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28 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) The second perfect number. Leonhard Euler (1707--1783) proved that all even Perfect numbers are of the form 2n-1(2n - 1) where 2n - 1 is a Mersenne prime Mn.
Submitted: 2000-06-16 10:24:11; Last Modified: 2008-04-08 22:35:04.
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