OFFSET
1,1
EXAMPLE
2^4=16, 1+6=7. 5^4=625, 6+2+5=13. 7^4=2401, 2+4+0+1=7.
MATHEMATICA
Select[Prime@ Range@ 180, PrimeQ@ Total@ IntegerDigits[#^4] &] (* Michael De Vlieger, Jul 08 2019 *)
PROG
(PARI) isok(p) = isprime(p) && isprime(sumdigits(p^4)); \\ Michel Marcus, Apr 09 2019
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Salvatore Di Guida, Apr 09 2019
STATUS
approved