Primes / Is 111 prime?
Is 111 a Prime Number?
No111 = 3 x 37
111 is NOT prime: 3 × 37 = 111. That makes 3 a genuine divisor of 111 beyond 1 and 111 itself. Fully broken down, 111 = 3 × 37, for 4 divisors total. 111 sits between primes 109 and 113, 2 below and 2 above. 111: 3 divide 111 evenly, checked against 2-12. 111 is odd, digit sum 3 for 111, digital root 3 for 111. 111 has 5 primes within 10 of 111.