Primes / Is 199 prime?

Is 199 a Prime Number?

Yes

199 is prime: for 199, testing every prime up to √199 ≈ 14.1 (namely 2, 3, 5, 7, 11, 13) finds no divisor. 199 sits between primes 197 and 211, 2 below and 12 above. 199 shares no factor with 2-12; 199's divisors start beyond that range. 199 is odd, digit sum 19 for 199, digital root 1 for 199. 199 has 4 primes within 10 of 199.