Q: What are the prime factors of the number 86,911,048?

 A: 2, 7, 173, 8971

Why are those the prime factors of the number 86,911,048?

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 86,911,048

86,911,048
Factor Arrows
243,455,524
Factor Arrows
221,727,762
Factor Arrows
210,863,881
Factor Arrows
71,551,983
Factor Arrows
1738,971

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, 7, 173, 8971

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 173 x 8,971 = 86,911,048

This can also be written as 23 x 71 x 1731 x 8,9711 = 86,911,048

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


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