exactly 2
Prime numbers.
Prime numbers have exactly two factors.All prime numbers have only 2 factors whereas composite numbers have more than 2 factors
8, 2*2*2
Prime numbers have exactly two factors. 53 and 59 are prime numbers.
Prime numbers
Prime numbers have only two factors.
4, with factors 1, 2 and 4
There isn't one. Negative numbers have prime factors and numbers don't stop. The smallest positive numbers with a prime factor is 2.
It is: 100
4? the factors of 4 are 1,4 and 2
6. Factors are 1, 2, 3, and 6.