Q: What are the prime factors of the number 345,338,574?

 A: 2, 3, 7, 31, 5413

Why are those the prime factors of the number 345,338,574?

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 345,338,574

345,338,574
Factor Arrows
2172,669,287
Factor Arrows
357,556,429
Factor Arrows
78,222,347
Factor Arrows
71,174,621
Factor Arrows
7167,803
Factor Arrows
315,413

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, 7, 31, 5413

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 7 x 7 x 31 x 5,413 = 345,338,574

This can also be written as 21 x 31 x 73 x 311 x 5,4131 = 345,338,574

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


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