This number is a prime.
Single Curio View: (Seek other curios for this number)The repunit R71=(1071-1)/9 is a semiprime and therefore relatively hard to factor. Note that its smallest factor contains all of the digits, except 7 + 1.
Submitted: 2006-07-23 13:37:23; Last Modified: 2008-07-31 08:19:30.
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