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2 x 9 = 18, so 18 has more factors than 1 and itself. It cannot be prime because a Prime number has two factors: 1 and itself.
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Earn +20 ptsQ: Why is 18 not a prime number?
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What two composite numbers have the prime who's prime factors are 18?
18 is not a prime number so no number can have 18 as a prime factor.
Are 2 and 18 composite or prime?
2 is a prime number. 18 is a composite number.
A prime number sentence for the number 18 A PRIME NUMBER SENTENCE FOR 18?
2 x 3 x 3 = 18
What are the prime factorization for number 18?
The prime factorization of the number 18 is 2 x 3 x 3.
What numbers are 18 relatively prime to?
Any odd prime number.
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