mersenneforum.org - View Single Post - Numbers of the form 667, 666999667, 666999666999667...

enzocreti · 2020-03-04, 18:28

When these numbers are prime are they always congruent to 15 mod 23?

666999666999667 is prime and 15 mod 23

2020-03-04, 18:28	#1
enzocreti Mar 2018 1017₈ Posts	Numbers of the form 667, 666999667, 666999666999667... When these numbers are prime are they always congruent to 15 mod 23? 666999666999667 is prime and 15 mod 23 Last fiddled with by enzocreti on 2020-03-04 at 21:02