Q: What are the prime factors of the number 541,664,640?

 A: 2, 3, 5, 11, 83, 103

Why are those the prime factors of the number 541,664,640?

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 541,664,640

541,664,640
Factor Arrows
2270,832,320
Factor Arrows
2135,416,160
Factor Arrows
267,708,080
Factor Arrows
233,854,040
Factor Arrows
216,927,020
Factor Arrows
28,463,510
Factor Arrows
24,231,755
Factor Arrows
31,410,585
Factor Arrows
3470,195
Factor Arrows
594,039
Factor Arrows
118,549
Factor Arrows
83103

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, 11, 83, 103

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 5 x 11 x 83 x 103 = 541,664,640

This can also be written as 27 x 32 x 51 x 111 x 831 x 1031 = 541,664,640

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


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