9 is not prime
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7and 5(7-5=2)
The number with prime factors of 3, 3, and 5 is 45. This is because 3 x 3 x 5 = 45. Prime factors are the prime numbers that multiply together to make a composite number, and in this case, the prime factors of 45 are 3 and 5.
375 is not prime. 375 = 3 * 5 * 5 * 5
The next prime number after 3 is 5
3*5 = 15 in prime numbers