Q: What are the prime factors of the number 89,614,720?

 A: 2, 5, 13, 10771

Why are those the prime factors of the number 89,614,720?

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 89,614,720

89,614,720
Factor Arrows
244,807,360
Factor Arrows
222,403,680
Factor Arrows
211,201,840
Factor Arrows
25,600,920
Factor Arrows
22,800,460
Factor Arrows
21,400,230
Factor Arrows
2700,115
Factor Arrows
5140,023
Factor Arrows
1310,771

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, 5, 13, 10771

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 5 x 13 x 10,771 = 89,614,720

This can also be written as 27 x 51 x 131 x 10,7711 = 89,614,720

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


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