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Call this number n. Then for each prime p which divides n, both p-1 and p+1 divide n-1. Hence n passes an infinite number of Lucas pseudoprimality tests, despite being divisible by 16 distinct primes. [Broadhurst]

 

  Submitted: 2009-03-30 17:35:12;   Last Modified: 2009-03-30 18:07:00.



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