Q: What are the prime factors of the number 554,231,640?

 A: 2, 3, 5, 31, 383, 389

Why are those the prime factors of the number 554,231,640?

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 554,231,640

554,231,640
Factor Arrows
2277,115,820
Factor Arrows
2138,557,910
Factor Arrows
269,278,955
Factor Arrows
323,092,985
Factor Arrows
54,618,597
Factor Arrows
31148,987
Factor Arrows
383389

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, 383, 389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 31 x 383 x 389 = 554,231,640

This can also be written as 23 x 31 x 51 x 311 x 3831 x 3891 = 554,231,640

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


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