Q: What are the prime factors of the number 10,781,136?

 A: 2, 3, 74869

Why are those the prime factors of the number 10,781,136?

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 10,781,136

10,781,136
Factor Arrows
25,390,568
Factor Arrows
22,695,284
Factor Arrows
21,347,642
Factor Arrows
2673,821
Factor Arrows
3224,607
Factor Arrows
374,869

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, 74869

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 74,869 = 10,781,136

This can also be written as 24 x 32 x 74,8691 = 10,781,136

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


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