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challenge - prime numbers where sum of squared digits of prime number is also prime
01-05-2018, 04:23 PM
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RE: challenge - prime numbers where sum of squared digits of prime number is also prime
Agreed... the Happy / Unhappy number process was used for the programming contest at this past year's HHC meeting.

Here, I'm wondering how many prime numbers have primes as the result of squaring then summing the original prime number's digits. :-)
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RE: challenge - prime numbers where sum of squared digits of prime number is also prime - Gene - 01-05-2018 04:23 PM



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