69206017domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form n*2^phi(n)+1 with phi the Euler function.at n=16A046154Nonstandard Jacobi primes.at n=19A275879a(n) is the largest prime 2^(n-1) <= p < 2^n minimizing the Hamming weight of all primes in this interval.at n=25A333876Prime numbersat n=4074044