227862073domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes that divide 2^(3^n)+1 for some n.at n=14A136474Irregular triangle read by rows: row n gives prime factors of (2^(3^(n+1))+1)/(2^(3^n)+1).at n=15A136475Prime numbersat n=12531443