Q: What are the prime factors of the number 357,031,320?

 A: 2, 3, 5, 53, 73, 769

Why are those the prime factors of the number 357,031,320?

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 357,031,320

357,031,320
Factor Arrows
2178,515,660
Factor Arrows
289,257,830
Factor Arrows
244,628,915
Factor Arrows
314,876,305
Factor Arrows
52,975,261
Factor Arrows
5356,137
Factor Arrows
73769

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, 53, 73, 769

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 53 x 73 x 769 = 357,031,320

This can also be written as 23 x 31 x 51 x 531 x 731 x 7691 = 357,031,320

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


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