1628801domain: NPropertiesPrimalityPrimeyesAppears in sequencesExpansion of (1-x)/(1-2*x+2*x^2+x^3).at n=30A078004Primes that have the property that deleting some digit results in a prime with the same multiplicative order, or period (repeating length of 1/p).at n=13A116074Prime numbersat n=123168