Q: What are the prime factors of the number 637,776?

 A: 2, 3, 43, 103

Why are those the prime factors of the number 637,776?

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 637,776

637,776
Factor Arrows
2318,888
Factor Arrows
2159,444
Factor Arrows
279,722
Factor Arrows
239,861
Factor Arrows
313,287
Factor Arrows
34,429
Factor Arrows
43103

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, 43, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 43 x 103 = 637,776

This can also be written as 24 x 32 x 431 x 1031 = 637,776

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


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