OFFSET
1,1
COMMENTS
Numbers of this form are an attempt to generalize Mersenne numbers (see link).
LINKS
Craig J. Beisel, Can it be shown that numbers of a certain form produce primes more often than expected?, Math StackExchange, November 2019.
PROG
(PARI) z=[]; forprime(a=3, 1000, forprime(b=a+2, 1000, for(i=1, 10, for(j=1, 10, y=a+b; x=a^i*b^j-y; if(x<500 && isprime(x) && setsearch(z, x)==0, z=setunion(z, [x])) )))); print(z)
CROSSREFS
KEYWORD
nonn
AUTHOR
Craig J. Beisel, Nov 26 2019
STATUS
approved