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

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Let c = 2^a * 3^b with a,b>0 and prime p with p^n, n>1, c-p^k=prime. Is prime=23 the most common? E.g., 48-25=23, 72-49=23, 144-121=23, 192-169=23, 648-625=23, etc. [Bergot]

 

  Submitted: 2019-04-20 12:26:58;   Last Modified: 2019-04-20 16:18:31.



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