Q: What are the prime factors of the number 636,611,472?

 A: 2, 3, 7, 631559

Why are those the prime factors of the number 636,611,472?

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 636,611,472

636,611,472
Factor Arrows
2318,305,736
Factor Arrows
2159,152,868
Factor Arrows
279,576,434
Factor Arrows
239,788,217
Factor Arrows
313,262,739
Factor Arrows
34,420,913
Factor Arrows
7631,559

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, 7, 631559

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 7 x 631,559 = 636,611,472

This can also be written as 24 x 32 x 71 x 631,5591 = 636,611,472

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


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