Q: What are the prime factors of the number 272,122,578?

 A: 2, 3, 7, 13, 293

Why are those the prime factors of the number 272,122,578?

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 272,122,578

272,122,578
Factor Arrows
2136,061,289
Factor Arrows
345,353,763
Factor Arrows
315,117,921
Factor Arrows
35,039,307
Factor Arrows
31,679,769
Factor Arrows
3559,923
Factor Arrows
3186,641
Factor Arrows
726,663
Factor Arrows
73,809
Factor Arrows
13293

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, 13, 293

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 7 x 7 x 13 x 293 = 272,122,578

This can also be written as 21 x 36 x 72 x 131 x 2931 = 272,122,578

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


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