The book is now available! 91511...84001 (23707-digits)
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This 23707-digit number is a pseudoprime in every base less than 10^1100, yet it has 524286 proper divisors. Here is the explanation. [Broadhurst]

 

  Submitted: 2004-05-17 19:42:18;   Last Modified: 2008-01-30 11:28:00.



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