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5 is a prime number.
3112331
24 is not a prime number because it has more than two factors.
Prime factorization never includes a composite number. All numbers in prime factorization must be prime numbers.
Both. Because there are both even and odd prime numbers.
odd numbers
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3112331 and 251519 are prime.
5 is a prime number.
9
3112331
2, 3, 5, and 9 includes one composite number - 9. 3, 11, 23, and 31 are all prime numbers. 2, 5, 15, and 19 includes one composite number - 19. 7, 17, 29, and 49 includes one composite number - 49.
24 is not a prime number because it has more than two factors.
Prime factorization never includes a composite number. All numbers in prime factorization must be prime numbers.
1 to 50
It's not a case of working them out, you just have to know them. Here are the following prime numbers under 100: