160465489domain: NPropertiesPrimalityPrimeyesAppears in sequencesLargest primitive factor of 2^(2n+1) + 1.at n=28A002589Prime factors of terms of A127263.at n=14A136372Primes p such that (p-1)/ord(2,p) > (q-1)/ord(2,q) for odd primes q < p.at n=30A226216Largest prime factor of 8^n + 1.at n=19A274905Prime numbersat n=8999147