Q: What are the prime factors of the number 65,413,664?

 A: 2, 43, 137, 347

Why are those the prime factors of the number 65,413,664?

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 65,413,664

65,413,664
Factor Arrows
232,706,832
Factor Arrows
216,353,416
Factor Arrows
28,176,708
Factor Arrows
24,088,354
Factor Arrows
22,044,177
Factor Arrows
4347,539
Factor Arrows
137347

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, 43, 137, 347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 43 x 137 x 347 = 65,413,664

This can also be written as 25 x 431 x 1371 x 3471 = 65,413,664

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


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