Q: What are the prime factors of the number 56,726,145?

 A: 3, 5, 7, 101, 1783

Why are those the prime factors of the number 56,726,145?

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 56,726,145

56,726,145
Factor Arrows
318,908,715
Factor Arrows
36,302,905
Factor Arrows
51,260,581
Factor Arrows
7180,083
Factor Arrows
1011,783

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:

3, 5, 7, 101, 1783

We can check our work by multiplying all of the prime factors together: 3 x 3 x 5 x 7 x 101 x 1,783 = 56,726,145

This can also be written as 32 x 51 x 71 x 1011 x 1,7831 = 56,726,145

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


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