745747domain: NPropertiesPrimalityPrimeyesAppears in sequences3-nadirs of Omega: numbers k such that Omega(k-3) > Omega(k-2) > Omega(k-1) > Omega(k) < Omega(k+1) < Omega(k+2) < Omega(k+3), where Omega(k) = number of prime factors of k, counting multiplicity.at n=17A076778Triangle of primes derived in A083776.at n=15A083778Prime numbersat n=59927