Q: What are the prime factors of the number 313,643,526?

 A: 2, 3, 7, 19, 29, 13553

Why are those the prime factors of the number 313,643,526?

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 313,643,526

313,643,526
Factor Arrows
2156,821,763
Factor Arrows
352,273,921
Factor Arrows
77,467,703
Factor Arrows
19393,037
Factor Arrows
2913,553

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, 3, 7, 19, 29, 13553

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 19 x 29 x 13,553 = 313,643,526

This can also be written as 21 x 31 x 71 x 191 x 291 x 13,5531 = 313,643,526

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


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