The prime factorization for 18 is:
2 x 9
2 x 3 x 3, so the two prime numbers that give you 18 are 2 and 3.
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18 is not a prime number so no number can have 18 as a prime factor.
The only two prime factors of 18 are: 2, 3
The prime factors of 18 are 2, 3, and 3. When multiplied together, 2 x 3 x 3 equals 18. These are the three prime numbers that multiply to give 18.
There are only two and they are 3 and 2.
The numbers are 17 and 18.