Saturday, September 19, 2015

elementary number theory - Finitely many Supreme Primes?

A challenge on codegolf.stackexchange is to find the highest "supreme" prime: https://codegolf.stackexchange.com/questions/35441/find-the-largest-prime-whose-length-sum-and-product-is-prime



A supreme prime has the following properties:




  • the number itself is prime

  • the number of digits is prime

  • the sum of digits is prime


  • the product of digits is prime



Are there finitely many "supreme" primes? Are there infinitely many? Currently the highest one found is ~1072227

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