1,2,3,5,7,11,13,17,19,23,29,31....
A Prime number has exactly two factors.
2 is prime (its factors are 1 and 2)
3 is prime (its factors are 1 and 3)
5 is prime (its factors are 1 and 5)
1 is not prime (its only factor is 1, this is 1 factor, not 2)
4 is not prime (it has 3 factors: 1, 2, and 4)
6 is not prime (it has 4 factors: 1, 2, 3, and 6)
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The prime numbers from 1 to 3 are 2 and 3.
A prime number has 2 factors; 1 and itself. 0 and 1 are neither prime nor composite, so the prime numbers are 2 and 3.
Prime numbers from 1 to 9 are: 2 3 5 and 7
The prime numbers from 1 to 6 are 2, 3 and 5.
The number or prime numbers in infinite. Prime numbers can only be divided by 1 and the prime number itself. If you multiply all known prime numbers (you must not leave out any of them) and add 1 to the product the result is another prime number. E.g. 2 * 3 + 1 = 7 (prime) 2 * 3 * 5 + 1 = 31 (prime) 2 * 3 * 5 * 7 + 1 = 211 (prime) ... infinity