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Single Curio View: (Seek other curios for this number) 163 is the smallest prime number that is a factor of more than one number of the form p# - 1 (163 divides both 67# - 1 and 79# - 1).
Submitted: 2004-08-16 20:10:02; Last Modified: 2008-01-30 11:28:00.
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