Primes / Is 307 prime?

Is 307 a Prime Number?

Yes

307 is prime: for 307, testing every prime up to √307 ≈ 17.5 (namely 2, 3, 5, 7, 11, 13, 17) finds no divisor. 307 sits between primes 293 and 311, 14 below and 4 above. 307 shares no factor with 2-12; 307's divisors start beyond that range. 307 is odd, digit sum 10 for 307, digital root 1 for 307. 307 has 4 primes within 10 of 307.