Q: What are the prime factors of the number 340,205,020?

 A: 2, 5, 17, 71, 829

Why are those the prime factors of the number 340,205,020?

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 340,205,020

340,205,020
Factor Arrows
2170,102,510
Factor Arrows
285,051,255
Factor Arrows
517,010,251
Factor Arrows
171,000,603
Factor Arrows
1758,859
Factor Arrows
71829

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, 5, 17, 71, 829

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 17 x 17 x 71 x 829 = 340,205,020

This can also be written as 22 x 51 x 172 x 711 x 8291 = 340,205,020

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


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