Q: What are the prime factors of the number 51,520,664?

 A: 2, 13, 53, 719

Why are those the prime factors of the number 51,520,664?

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 51,520,664

51,520,664
Factor Arrows
225,760,332
Factor Arrows
212,880,166
Factor Arrows
26,440,083
Factor Arrows
13495,391
Factor Arrows
1338,107
Factor Arrows
53719

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, 13, 53, 719

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 13 x 13 x 53 x 719 = 51,520,664

This can also be written as 23 x 132 x 531 x 7191 = 51,520,664

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


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