OFFSET
1,1
LINKS
Fred Cohen and J. L. Selfridge, Not every number is the sum or difference of two prime powers, Math. Comput. 29 (1975), pp. 79-81.
PROG
(Magma) PrimeDivisors((2^36-1)*(2^48-1)*(2^60-1))[1..18];
CROSSREFS
KEYWORD
nonn,fini,full
AUTHOR
Arkadiusz Wesolowski, Feb 23 2016
STATUS
approved