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

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Add the cubes of the digits of p = 331, i.e. 1^3 + 3^3 + 3^3 + 1^3 = 55. Repeat the same steps with 55. It follows that 5^3 + 5^3 = 250, then 2^3 + 5^3 + 0^3 = 133, etc. Is 133 the only reversal of p in the sequence of primes? [Missailidis]

 

  Submitted: 2018-04-01 09:14:03;   Last Modified: 2018-04-01 09:15:50.



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