No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. No 9 is not prime. It's factors are 1,3,9. Proper factors: 1,3. Factors are numbers that are multiplied with other numbers to get a product. Proper factors are factors of a number except for itself. Composite numbers are numbers with more than 2 factors and more than 1 proper factor. Prime is the opposite of composite.
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7+1+1 = 9 so it is divisible by 9 and so not a prime.
32 = 9
9 prime factors --> 3,3 15 prime factors --> 5,3 45 prime factors --> 5,3,3 They all share 3 therefore: "3"; Between 9 and 45 they share: 3,3 ----for 9 & 45 gcf is 3*3 = 9;
9
3 and 5 are prime numbers. This means they can't be separated into smaller factors. For comparison, 9 is not a prime number, since it CAN be separated into smaller factors (9 = 3 x 3).