Q: What are the prime factors of the number 91,585,400?

 A: 2, 5, 61, 7507

Why are those the prime factors of the number 91,585,400?

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 91,585,400

91,585,400
Factor Arrows
245,792,700
Factor Arrows
222,896,350
Factor Arrows
211,448,175
Factor Arrows
52,289,635
Factor Arrows
5457,927
Factor Arrows
617,507

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, 61, 7507

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 5 x 61 x 7,507 = 91,585,400

This can also be written as 23 x 52 x 611 x 7,5071 = 91,585,400

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


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