challenge - prime numbers where sum of squared digits of prime number is also prime

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challenge - prime numbers where sum of squared digits of prime number is also prime

01-06-2018, 02:18 AM

Post: #11

DavidM Offline

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Posts: 981
Joined: Dec 2013

RE: challenge - prime numbers where sum of squared digits of prime number is also prime

(01-05-2018 08:37 PM)Gilles59 Wrote:

Code:

{} 1 WHILE DUP 1000 < REPEAT NEXTPRIME DUP I->NL SQ LSUM ISPRIME? {SWAP OVER + SWAP} IFT END DROP

Code:

100000 DO PREVPRIME UNTIL DUP I->NL SQ LSUM ISPRIME? END

Warms my heart, Gilles. Smile

I'm starting to think of I→NL as the "challenge and puzzle" command, as it seems to be most useful in those situations.

"If the shoe fits..."

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Messages In This Thread

challenge - prime numbers where sum of squared digits of prime number is also prime - Gene - 01-05-2018, 01:34 PM

RE: challenge - prime numbers where … - SlideRule - 01-05-2018, 02:01 PM

RE: challenge - prime numbers where sum of squared digits of prime number is also prime - Gene - 01-05-2018, 03:31 PM

RE: challenge - prime numbers where sum of squared digits of prime number is prime - Didier Lachieze - 01-05-2018, 02:02 PM

RE: challenge - prime numbers where sum of squared digits of prime number is also prime - TheKaneB - 01-05-2018, 03:42 PM

RE: challenge - prime numbers where sum of squared digits of prime number is also prime - Gene - 01-05-2018, 04:23 PM

RE: challenge - prime numbers where sum of squared digits of prime number is also prime - Gilles59 - 01-05-2018, 08:37 PM

RE: challenge - prime numbers where sum of squared digits of prime number is also prime - DavidM - 01-06-2018 02:18 AM

RE: challenge - prime numbers where sum of squared digits of prime number is also prime - pier4r - 01-06-2018, 08:32 PM

RE: challenge - prime numbers where sum ... - wawa - 01-06-2018, 05:46 PM

challenge - prime numbers where sum of squared digits of prime number is also prime - Juan14 - 01-08-2018, 01:58 AM

challenge - prime numbers where sum of squared digits of prime number is also prime - Valentin Albillo - 01-08-2018, 07:43 PM

challenge - prime numbers where sum of squared digits of prime number is also prime - Dwight Sturrock - 02-01-2018, 01:54 AM

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