Q: What are the prime factors of the number 745,888?

 A: 2, 11, 13, 163

Why are those the prime factors of the number 745,888?

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 745,888

745,888
Factor Arrows
2372,944
Factor Arrows
2186,472
Factor Arrows
293,236
Factor Arrows
246,618
Factor Arrows
223,309
Factor Arrows
112,119
Factor Arrows
13163

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, 11, 13, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 11 x 13 x 163 = 745,888

This can also be written as 25 x 111 x 131 x 1631 = 745,888

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


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