Primes / Is 373 prime?

Is 373 a Prime Number?

Yes

373 is prime: for 373, testing every prime up to √373 ≈ 19.3 (namely 2, 3, 5, 7, 11, 13, 17, 19) finds no divisor. 373 sits between primes 367 and 379, 6 below and 6 above. 373 shares no factor with 2-12; 373's divisors start beyond that range. 373 is odd, digit sum 13 for 373, digital root 4 for 373. 373 has 4 primes within 10 of 373.