Primes / Is 337 prime?

Is 337 a Prime Number?

Yes

337 is prime: for 337, testing every prime up to √337 ≈ 18.4 (namely 2, 3, 5, 7, 11, 13, 17) finds no divisor. 337 sits between primes 331 and 347, 6 below and 10 above. 337 shares no factor with 2-12; 337's divisors start beyond that range. 337 is odd, digit sum 13 for 337, digital root 4 for 337. 337 has 3 primes within 10 of 337.