Is 111 a Prime Number?

No, 111 is not a prime number, it is a composite number.

111 Not a Prime Number Proof with Adraktas Formula

X = 111

a5 = [ X - 5 ] / 6
a5 = [ 111 - 5 ] / 6
a5 = 17.6666666667
a5 is not integer

a7 = [ X - 7 ] / 6
a7 = [ 111 - 7 ] / 6
a7 = 17.3333333333
a7 is not integer

Both a5 and a7 is not integer.

111 is not a prime number

Why 111 is not a prime number?

Because 111 has divisors rather than 1 and itself. 111 can be divided by 3 and 37.

Prime factorization of 111 (list of divisors):

  • 3
  • 37

The next prime number of 111 is 113
The previous prime number of 111 is 109.


Related Prime Numbers

Biggest 10 prime numbers smaller than 111

Smallest 10 prime numbers bigger than 111

Related Non-Prime Numbers

Biggest 10 composite numbers smaller than 111

Smallest 10 composite numbers bigger than 111