82589933domain: NPropertiesPrimalityPrimeyesAppears in sequencesOdious Mersenne exponents.at n=26A237499Let M_p = 2^p-1 be a Mersenne prime, where p is an odd prime. Sequence lists p such that b_{p-2} == -2^((p+1)/2) mod M_p, where {b_k} is defined in the Comments.at n=24A354168Prime numbersat n=4811740