Prime Curios!: 691

691
(another Prime Pages' Curiosity)

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The first prime Lychrel number (a number that does not form a palindrome by repeatedly applying the reverse-then-add process). The first Lychrel number is the reversal of 691.

Submitted: 2006-10-17 22:18:31; Last Modified: 2008-08-13 06:13:34.