Primes / Is 223 prime?

Is 223 a Prime Number?

Yes

223 is prime: for 223, testing every prime up to √223 ≈ 14.9 (namely 2, 3, 5, 7, 11, 13) finds no divisor. 223 sits between primes 211 and 227, 12 below and 4 above. 223 shares no factor with 2-12; 223's divisors start beyond that range. 223 is odd, digit sum 7 for 223, digital root 7 for 223. 223 has 4 primes within 10 of 223.