The book is now available! 608191
(another Prime Pages' Curiosity)
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GIMPS has discovered a new largest known prime number: 282589933-1 (24,862,048 digits)

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608191 inverted (161809) becomes the smallest 2-sphenic number whose concatenation of prime factors (43 × 53 × 71) create four primes, i.e., 435371, 437153, 534371, 537143. Can you find another such prime? [Loungrides]

 

  Submitted: 2018-12-30 09:22:37;   Last Modified: 2018-12-30 09:26:45.



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