506531domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 10*n^3 + 1.at n=12A168147Upper ends of record gaps between numbers that are either primes or semiprimes.at n=11A275014Greater number in the least prime-semiprime gap of size n.at n=21A278404Prime numbersat n=42030