Q: What are the prime factors of the number 631,466,528?

 A: 2, 7, 11, 31, 1181

Why are those the prime factors of the number 631,466,528?

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 631,466,528

631,466,528
Factor Arrows
2315,733,264
Factor Arrows
2157,866,632
Factor Arrows
278,933,316
Factor Arrows
239,466,658
Factor Arrows
219,733,329
Factor Arrows
72,819,047
Factor Arrows
7402,721
Factor Arrows
1136,611
Factor Arrows
311,181

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, 7, 11, 31, 1181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 7 x 7 x 11 x 31 x 1,181 = 631,466,528

This can also be written as 25 x 72 x 111 x 311 x 1,1811 = 631,466,528

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


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