106961domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p and p+2 are twin primes and also the strings 987654321p and 987654321p+2 are twin primes.at n=24A103818Euclid-Mullin sequence (A000945) with initial value a(1) = 139 instead of a(1) = 2.at n=21A261703Prime numbersat n=10195