Q: What are the prime factors of the number 113,525,405?

 A: 5, 7, 17, 97, 281

Why are those the prime factors of the number 113,525,405?

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 113,525,405

113,525,405
Factor Arrows
522,705,081
Factor Arrows
73,243,583
Factor Arrows
7463,369
Factor Arrows
1727,257
Factor Arrows
97281

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:

5, 7, 17, 97, 281

We can check our work by multiplying all of the prime factors together: 5 x 7 x 7 x 17 x 97 x 281 = 113,525,405

This can also be written as 51 x 72 x 171 x 971 x 2811 = 113,525,405

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


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