Primes / Is 419 prime?

Is 419 a Prime Number?

Yes

419 is prime: for 419, testing every prime up to √419 ≈ 20.5 (namely 2, 3, 5, 7, 11, 13, 17, 19) finds no divisor. 419 sits between primes 409 and 421, 10 below and 2 above. 419 shares no factor with 2-12; 419's divisors start beyond that range. 419 is odd, digit sum 14 for 419, digital root 5 for 419. 419 has 3 primes within 10 of 419.