Q: What are the prime factors of the number 313,443,220?

 A: 2, 5, 15672161

Why are those the prime factors of the number 313,443,220?

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 313,443,220

313,443,220
Factor Arrows
2156,721,610
Factor Arrows
278,360,805
Factor Arrows
515,672,161

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:

2, 5, 15672161

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 15,672,161 = 313,443,220

This can also be written as 22 x 51 x 15,672,1611 = 313,443,220

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


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