Q: What are the prime factors of the number 340,685,732?

 A: 2, 19, 43, 61, 1709

Why are those the prime factors of the number 340,685,732?

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 340,685,732

340,685,732
Factor Arrows
2170,342,866
Factor Arrows
285,171,433
Factor Arrows
194,482,707
Factor Arrows
43104,249
Factor Arrows
611,709

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, 19, 43, 61, 1709

We can check our work by multiplying all of the prime factors together: 2 x 2 x 19 x 43 x 61 x 1,709 = 340,685,732

This can also be written as 22 x 191 x 431 x 611 x 1,7091 = 340,685,732

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


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