Primes / Is 349 prime?

Is 349 a Prime Number?

Yes

349 is prime: for 349, testing every prime up to √349 ≈ 18.7 (namely 2, 3, 5, 7, 11, 13, 17) finds no divisor. 349 sits between primes 347 and 353, 2 below and 4 above. 349 shares no factor with 2-12; 349's divisors start beyond that range. 349 is odd, digit sum 16 for 349, digital root 7 for 349. 349 has 4 primes within 10 of 349.