Q: What are the prime factors of the number 317,615,553?

 A: 3, 31, 157, 2417

Why are those the prime factors of the number 317,615,553?

Prime factors are the prime numbers that can be multipled together to equal the original number. You find the factors by dividing by prime numbers. It is best shown by creating a Factor Tree.

Factor Tree for the number 317,615,553

317,615,553
Factor Arrows
3105,871,851
Factor Arrows
335,290,617
Factor Arrows
311,763,539
Factor Arrows
31379,469
Factor Arrows
1572,417

The numbers in bold above are the prime factors. If there are multiples, you only count them one time. This leads us to our prime factors of:

3, 31, 157, 2417

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 31 x 157 x 2,417 = 317,615,553

This can also be written as 33 x 311 x 1571 x 2,4171 = 317,615,553

If you would like to know more, or need additional explanation, please review our prime factorization explanation.


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