0,1

C. Rivera, See also related puzzle

Prime 19294523 = composite 19294436 + sopf 2+2+7+7+7+7+7+7+41 = 19294436 + 87 = nextprime(19294436).

Cf. A050765, A050703, A050710.

Sequence in context: A050777 A050765 A013873 this_sequence A074484 A043666 A154062

Adjacent sequences: A050763 A050764 A050765 this_sequence A050767 A050768 A050769

nonn,nice

Patrick De Geest (pdg(AT)worldofnumbers.com), Sep 15 1999.