OFFSET
1,1
COMMENTS
A pair of cousin primes are primes of the form p and p+4 (where p+2 may or may not be a prime).
Generates cousin primes such that the last digits of the primes are 9 and 3 in base 10.
PROG
(PARI) isok(p) = isprime(p) && isprime(10*p-1) && isprime(10*p+3); \\ Michel Marcus, Mar 05 2021
CROSSREFS
KEYWORD
nonn
AUTHOR
Tamas Nagy, Mar 04 2021
STATUS
approved