4654801domain: NPropertiesPrimalityPrimeyesAppears in sequencesDuodecimal primes: p = (x^12 + y^12 )/(x^4 + y^4 ).at n=9A006687Zsigmondy numbers for a = 7, b = 5: Zs(n, 7, 5) is the greatest divisor of 7^n - 5^n that is relatively prime to 7^m - 5^m for all positive integers m < n.at n=23A109349Prime numbersat n=326008