The prime factors of 13195 are 5, 7, 13 and 29.
What is the largest prime factor of the number 600851475143 ?
The word "prime factor" may be confusing.
so now i am going to split the word to "prime" and "factor".
First factor, factors are nothing but if any numbers within N, divides excatly N leaving remainder 0 then
they are the factors of N.
and the prime numbers in the factors are prime factors.
i.e first we want to find the factors , then we need to check whether the factors are prime or not.