every composite number can be written as the multiplication of several prime numbers. each prime number is a factor of this composite number, which is called the decomposed prime factor of this composite number. factoring prime factors only applies to composite numbers.

to give a simple example, the decomposition factors of 12 can be as follows: 12=2x2x3=4x3=1x12=2x6, among which 1, 2, 3, 4, 6, and 12 can all be said to be factors of 12, that is, the number of multiplication factors the number is equal to a natural number, then these numbers are the factors of this natural number. among 2, 3, and 4, 2 and 3 are prime numbers, which are prime factors, and 4 is not a prime number. so what are prime numbers? it is a number that cannot be split into factors other than 1 and itself, such as 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, etc. there are no specific rules for prime numbers and they do not exist. the largest prime number.