134217779domain: NPropertiesPrimalityPrimeyesAppears in sequencesa(n) = 2^(n+1) + 2*n - 1.at n=26A131898Primes of the form 2^n+2*n-3.at n=7A192436Smallest twin prime > 2^n.at n=26A208572Prime numbersat n=7603556