Is 18 a Prime Number?

No, 18 is not a prime number, it is a composite number.

Why 18 is not a prime number?

Because 18 has divisors rather than 1 and itself. 18 can be divided by 2 and 3.


The list of divisors of 18 ; (Only first 5 divisors listed)


The next prime number of 18 is 19, The previous prime number of 18 is 17.

Related Prime Numbers

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Smallest 10 prime numbers bigger than 18

Related Non-Prime Numbers

Biggest 10 composite numbers smaller than 18


Smallest 10 composite numbers bigger than 18