The book is now available! 359
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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For 359 we have: 2*3 + 5*7 + ... + 353*359 = 1352881 and 2*3*5*7 + 11*13*17*19 + ... + 347*349*353*359 = 51573902249, which are both primes. Can you find the next number with such property? [Petrov]

 

  Submitted: 2019-04-29 06:28:38;   Last Modified: 2019-04-29 06:47:29.



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