Q: What are the prime factors of the number 392,423,280?

 A: 2, 3, 5, 167, 9791

Why are those the prime factors of the number 392,423,280?

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 392,423,280

392,423,280
Factor Arrows
2196,211,640
Factor Arrows
298,105,820
Factor Arrows
249,052,910
Factor Arrows
224,526,455
Factor Arrows
38,175,485
Factor Arrows
51,635,097
Factor Arrows
1679,791

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, 167, 9791

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 167 x 9,791 = 392,423,280

This can also be written as 24 x 31 x 51 x 1671 x 9,7911 = 392,423,280

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


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