Q: What are the prime factors of the number 626,404,032?

 A: 2, 3, 17, 53, 71

Why are those the prime factors of the number 626,404,032?

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 626,404,032

626,404,032
Factor Arrows
2313,202,016
Factor Arrows
2156,601,008
Factor Arrows
278,300,504
Factor Arrows
239,150,252
Factor Arrows
219,575,126
Factor Arrows
29,787,563
Factor Arrows
33,262,521
Factor Arrows
31,087,507
Factor Arrows
1763,971
Factor Arrows
173,763
Factor Arrows
5371

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, 17, 53, 71

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 17 x 17 x 53 x 71 = 626,404,032

This can also be written as 26 x 32 x 172 x 531 x 711 = 626,404,032

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


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