Q: What are the prime factors of the number 64,651,864?

 A: 2, 31, 103, 2531

Why are those the prime factors of the number 64,651,864?

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 64,651,864

64,651,864
Factor Arrows
232,325,932
Factor Arrows
216,162,966
Factor Arrows
28,081,483
Factor Arrows
31260,693
Factor Arrows
1032,531

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, 31, 103, 2531

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 31 x 103 x 2,531 = 64,651,864

This can also be written as 23 x 311 x 1031 x 2,5311 = 64,651,864

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


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