Q: What are the prime factors of the number 83,141,640?

 A: 2, 3, 5, 67, 383

Why are those the prime factors of the number 83,141,640?

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 83,141,640

83,141,640
Factor Arrows
241,570,820
Factor Arrows
220,785,410
Factor Arrows
210,392,705
Factor Arrows
33,464,235
Factor Arrows
31,154,745
Factor Arrows
3384,915
Factor Arrows
3128,305
Factor Arrows
525,661
Factor Arrows
67383

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, 67, 383

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 3 x 3 x 3 x 5 x 67 x 383 = 83,141,640

This can also be written as 23 x 34 x 51 x 671 x 3831 = 83,141,640

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


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