1000577domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes p such that 128p+1 and (p-1)/128 are both prime.at n=16A086477Number of times the digit 1 appears in the first 10^n decimal digits of Euler's number e = exp(1), counting starts after the decimal point.at n=6A322716Prime numbersat n=78542