Q: What are the prime factors of the number 577,072,440?

 A: 2, 3, 5, 7, 31, 83, 89

Why are those the prime factors of the number 577,072,440?

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 577,072,440

577,072,440
Factor Arrows
2288,536,220
Factor Arrows
2144,268,110
Factor Arrows
272,134,055
Factor Arrows
324,044,685
Factor Arrows
38,014,895
Factor Arrows
51,602,979
Factor Arrows
7228,997
Factor Arrows
317,387
Factor Arrows
8389

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, 7, 31, 83, 89

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 5 x 7 x 31 x 83 x 89 = 577,072,440

This can also be written as 23 x 32 x 51 x 71 x 311 x 831 x 891 = 577,072,440

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


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