832801domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p+2, p+4, p+6, p+8, p+10 and p+12 are all semiprime.at n=25A241483Indices of tetrahedral numbers that are Fermat pseudoprimes to base 2.at n=30A321866Prime numbersat n=66382