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Old 2019-04-10, 14:57   #2
enzocreti
 
Mar 2018

2·263 Posts
Default Primes that do the job up to 103

I found that the primes that do the job up to p=103 are: 3, 7, 43.


Is there some relation with the fact that


10^r+333667 is prime for r=3,7 and 43 and no other prime r up to r=26.000?

Last fiddled with by enzocreti on 2019-04-10 at 15:06
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