1600223domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that p+2 is the square of a product of 3 distinct primes.at n=21A164519a(n+1) is the smallest prime > a(n) such that the digits of a(n) are all (with multiplicity) contained in the digits of a(n+1), with a(1)=2.at n=30A242904Prime numbersat n=121144