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40233*2^45360-1 is prime. Note that 45360 is a highly composite number with exactly 100 divisors. Also, if you sum the squared digits of 40233*2^45360-1 you get the prime 393683. [Earls]


  Submitted: 2004-08-18 09:18:18;   Last Modified: 2008-01-30 11:28:00.

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