283571domain: NPropertiesPrimalityPrimeyesAppears in sequencesLeast prime of a run of 3 or more consecutive decadal prime triples.at n=9A238715Lesser of twin primes p,p+2 such that the absolute difference of p and the reverse of p+2 is a twin prime and the absolute difference of p+2 and the reverse of p is a twin prime.at n=20A342299Prime numbersat n=24720