Q: What are the prime factors of the number 340,654,518?

 A: 2, 3, 23, 157, 1747

Why are those the prime factors of the number 340,654,518?

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 340,654,518

340,654,518
Factor Arrows
2170,327,259
Factor Arrows
356,775,753
Factor Arrows
318,925,251
Factor Arrows
36,308,417
Factor Arrows
23274,279
Factor Arrows
1571,747

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, 23, 157, 1747

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 23 x 157 x 1,747 = 340,654,518

This can also be written as 21 x 33 x 231 x 1571 x 1,7471 = 340,654,518

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


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