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Old 2005-12-12, 15:08   #2
alpertron's Avatar
Aug 2002
Buenos Aires, Argentina

32·149 Posts

The prime factors of 1105 (the second Carmichael number) are 5, 11 and 17.

None of these prime factors are Mersenne numbers.

Last fiddled with by alpertron on 2005-12-12 at 15:10 Reason: Fix typo
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