Q: What are the prime factors of the number 312,221,525?

 A: 5, 7, 11, 241, 673

Why are those the prime factors of the number 312,221,525?

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 312,221,525

312,221,525
Factor Arrows
562,444,305
Factor Arrows
512,488,861
Factor Arrows
71,784,123
Factor Arrows
11162,193
Factor Arrows
241673

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:

5, 7, 11, 241, 673

We can check our work by multiplying all of the prime factors together: 5 x 5 x 7 x 11 x 241 x 673 = 312,221,525

This can also be written as 52 x 71 x 111 x 2411 x 6731 = 312,221,525

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


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