165799domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that the NSW number A002315((p-1)/2) is prime.at n=21A005850If Mersenne numbers have 3 or more factors, then list the third factor.at n=8A089159Indices of prime companion Pell numbers, divided by 2 (A001333).at n=25A099088Prime numbersat n=15159