Q: What are the prime factors of the number 745,368?

 A: 2, 3, 13, 2389

Why are those the prime factors of the number 745,368?

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 745,368

745,368
Factor Arrows
2372,684
Factor Arrows
2186,342
Factor Arrows
293,171
Factor Arrows
331,057
Factor Arrows
132,389

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, 13, 2389

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 13 x 2,389 = 745,368

This can also be written as 23 x 31 x 131 x 2,3891 = 745,368

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


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