Q: What are the prime factors of the number 313,742,655?

 A: 3, 5, 23, 233, 1301

Why are those the prime factors of the number 313,742,655?

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 313,742,655

313,742,655
Factor Arrows
3104,580,885
Factor Arrows
334,860,295
Factor Arrows
56,972,059
Factor Arrows
23303,133
Factor Arrows
2331,301

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, 5, 23, 233, 1301

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 23 x 233 x 1,301 = 313,742,655

This can also be written as 32 x 51 x 231 x 2331 x 1,3011 = 313,742,655

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


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