5 is a Prime number, but not 9, because you can do 3*3=9
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2, 3, 5 are prime numbers but 9 is not a prime number
Prime numbers from 1 to 9 are: 2 3 5 and 7
The prime numbers from 1 to 9 are 2, 3, 5 and 7.
The prime numbers between 1 and 9 are 2, 3, 5, and 7.
The prime numbers (factors) of 75 are: 3 and 5