What is the least factor in a composite number?

Prime numbers have only two factors, and composite numbers have at least three factors. Factors: 1 and itself are two. If there is no third prime number, then there are at least three factors. For example, 4 has three factors: 1, 2, 4.

Composite number: a mathematical term that refers to a number in a natural number that can be divisible by other numbers except 1 and itself. 0'1'is neither a prime number nor a composite number. ? Factor: a mathematical term. If a*b=c(a, b and c are all integers), then we call a and b factors of c.

Factor, a mathematical term.

If a*b=c(a, B and C are all integers), then we call A and B factors of C. It should be noted that this relationship only holds when the dividend, divisor and quotient are integers and the remainder is zero. On the contrary, we call c a multiple of a and b, and we don't consider 0 when studying factors and multiples.