Factors / Factors of 109

Factors of 109

1, 109

109 is prime: only factor pair is (1, 109), confirmed by trial division up to √109 ≈ 10.4 turning up nothing else. 109's full pair list is (1, 109), for 2 divisors in total. 109's divisors other than 109 itself sum to just 1, 108 below 109: the common deficient case. 109 is odd, digit sum 10 for 109; none of 2-12 divide 109 evenly. 109 has 2 divisors; 108 has 12 and 110 has 8, so 108 wins here. 109 divided by its largest divisor, 1, gives 109.