It is: 5*31 = 155
It is: 5*31 = 155
The prime factorization of 155 is 5 * 315x31
5 x 31 = 155
5 x 31
5 x 31
1, 5, 31, 155 5 x 31 = 155
The prime number is the prime factorization. For example, the prime factorization of the prime number 3 is 3. Get it?
155 is not a prime number, but a composite number, as it is divisible by 5 and 31.
53 is a prime number so there is no relevant prime factorization for it.
The only number with that prime factorization has to be 48.
When all the factors are prime numbers, that's a prime factorization.
421 is a prime number so it does not have prime factorization.