Primes / Is 113 prime?

Is 113 a Prime Number?

Yes

113 is prime: for 113, testing every prime up to √113 ≈ 10.6 (namely 2, 3, 5, 7) finds no divisor. 113 sits between primes 109 and 127, 4 below and 14 above. 113 shares no factor with 2-12; 113's divisors start beyond that range. 113 is odd, digit sum 5 for 113, digital root 5 for 113. 113 has 4 primes within 10 of 113.