Q: What are the prime factors of the number 79,631,280?

 A: 2, 3, 5, 19, 5821

Why are those the prime factors of the number 79,631,280?

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 79,631,280

79,631,280
Factor Arrows
239,815,640
Factor Arrows
219,907,820
Factor Arrows
29,953,910
Factor Arrows
24,976,955
Factor Arrows
31,658,985
Factor Arrows
3552,995
Factor Arrows
5110,599
Factor Arrows
195,821

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, 5, 19, 5821

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 5 x 19 x 5,821 = 79,631,280

This can also be written as 24 x 32 x 51 x 191 x 5,8211 = 79,631,280

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


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