Q: What are the prime factors of the number 724,168,368?

 A: 2, 3, 7, 11, 241, 271

Why are those the prime factors of the number 724,168,368?

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 724,168,368

724,168,368
Factor Arrows
2362,084,184
Factor Arrows
2181,042,092
Factor Arrows
290,521,046
Factor Arrows
245,260,523
Factor Arrows
315,086,841
Factor Arrows
35,028,947
Factor Arrows
7718,421
Factor Arrows
1165,311
Factor Arrows
241271

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, 11, 241, 271

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 7 x 11 x 241 x 271 = 724,168,368

This can also be written as 24 x 32 x 71 x 111 x 2411 x 2711 = 724,168,368

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


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