Q: What are the prime factors of the number 785,134,800?

 A: 2, 3, 5, 17, 12829

Why are those the prime factors of the number 785,134,800?

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 785,134,800

785,134,800
Factor Arrows
2392,567,400
Factor Arrows
2196,283,700
Factor Arrows
298,141,850
Factor Arrows
249,070,925
Factor Arrows
316,356,975
Factor Arrows
35,452,325
Factor Arrows
51,090,465
Factor Arrows
5218,093
Factor Arrows
1712,829

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, 17, 12829

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 5 x 5 x 17 x 12,829 = 785,134,800

This can also be written as 24 x 32 x 52 x 171 x 12,8291 = 785,134,800

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


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