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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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Regular nonagon is the only regular polygon such that n^n +(n-2)*180/n (387420629) and ((n-2)*180/n)^n+n (20661046784000000009) are both prime. Note that (n-2)*180/n is an internal angel of a regular polygon. [Sariyar]

 

  Submitted: 2019-04-18 07:57:08;   Last Modified: 2019-04-18 09:04:53.



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