Q: What are the prime factors of the number 64,532,700?

 A: 2, 3, 5, 31, 257

Why are those the prime factors of the number 64,532,700?

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 64,532,700

64,532,700
Factor Arrows
232,266,350
Factor Arrows
216,133,175
Factor Arrows
35,377,725
Factor Arrows
31,792,575
Factor Arrows
3597,525
Factor Arrows
3199,175
Factor Arrows
539,835
Factor Arrows
57,967
Factor Arrows
31257

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, 31, 257

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3 x 5 x 5 x 31 x 257 = 64,532,700

This can also be written as 22 x 34 x 52 x 311 x 2571 = 64,532,700

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


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