The numbers 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157 and 163 are prime (including the boundaries).
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Oh, dude, you're really making me dig into my math brain for this one. So, the factors of 163 are 1 and 163 because, you know, it's a prime number and it's like, "I don't need any other factors, I'm good on my own." Prime factors are just the number itself because, like, it's a prime number, so it's like the VIP of factors.
Prime numbers are 151, 157, 163, 167, 173, 179,181,191,193,197,199,
Factors: 1, 3, 163, and 489 Prime factorization: 489 = 3 * 163
163 167
The numbers 127, 131, 137, 139, 149, 151, 157, 163, 167 and 173 are prime.