Q: What are the prime factors of the number 313,321,650?

 A: 2, 3, 5, 31, 43, 1567

Why are those the prime factors of the number 313,321,650?

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 313,321,650

313,321,650
Factor Arrows
2156,660,825
Factor Arrows
352,220,275
Factor Arrows
510,444,055
Factor Arrows
52,088,811
Factor Arrows
3167,381
Factor Arrows
431,567

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, 5, 31, 43, 1567

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 5 x 31 x 43 x 1,567 = 313,321,650

This can also be written as 21 x 31 x 52 x 311 x 431 x 1,5671 = 313,321,650

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


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