123707domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumber of blocks of size >= five in all set partitions of n.at n=6A288787Number of partitions of n with up to nine distinct kinds of 1.at n=27A320696Emirps p such that both p and its reversal are sums of three consecutive primes.at n=18A345472Prime numbersat n=11625