View Single Post
Old 2022-02-08, 14:43   #3
JCoveiro
 
"Jorge Coveiro"
Nov 2006
Moura, Portugal

4810 Posts
Default also2

Numbers:
Code:
3,11,23,191,3539,10691,83339,4031399,13347311
can be generated by: isprime(2*p+1)&&(p%4==3)

And numbers:
Code:
5,89,9689,21701,859433,43112609
can be generated by: isprime(2*p+1)&&(p%4==1)
JCoveiro is offline   Reply With Quote