Q: What are the prime factors of the number 644,626,056?

 A: 2, 3, 47, 571477

Why are those the prime factors of the number 644,626,056?

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 644,626,056

644,626,056
Factor Arrows
2322,313,028
Factor Arrows
2161,156,514
Factor Arrows
280,578,257
Factor Arrows
326,859,419
Factor Arrows
47571,477

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, 47, 571477

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 47 x 571,477 = 644,626,056

This can also be written as 23 x 31 x 471 x 571,4771 = 644,626,056

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


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