an astounding fact for one man, a triviality for mankind!
for k>67, when pg(k) is probable prime and k is prime, then k42 is prime as well!
for k>67
pg(79), pg(359), pg(3371), pg(331259) are probable primes with 79, 359, 3371 and 331259 primes.
7942 is prime
35942 is prime
337142 is prime
33125942 is prime
!!!
