887989domain: NPropertiesPrimalityPrimeyesAppears in sequencesNumbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 75.at n=24A031663Primes with digit sum = 49.at n=19A106779Primes p such that p^8 - 1 has 384 divisors.at n=29A342064Prime numbersat n=70410