OFFSET
4,1
EXAMPLE
For 91=7*13 we have 91+13 = 104; for 92=2*2*23 we have 92+23 = 115.
PROG
(PARI) cminusp3(n) = { for(x=2, n, forstep(p=x, 2, -1, if(isprime(p) & x%p==0 & isprime(x)==0, print1(x+p, ", "); break); ) ) }
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
Cino Hilliard, Aug 12 2003
STATUS
approved