Q: What are the prime factors of the number 636,251,400?

 A: 2, 3, 5, 353473

Why are those the prime factors of the number 636,251,400?

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 636,251,400

636,251,400
Factor Arrows
2318,125,700
Factor Arrows
2159,062,850
Factor Arrows
279,531,425
Factor Arrows
326,510,475
Factor Arrows
38,836,825
Factor Arrows
51,767,365
Factor Arrows
5353,473

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, 353473

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 5 x 353,473 = 636,251,400

This can also be written as 23 x 32 x 52 x 353,4731 = 636,251,400

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


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