Q: What are the prime factors of the number 71,158,136?

 A: 2, 7, 23, 101, 547

Why are those the prime factors of the number 71,158,136?

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 71,158,136

71,158,136
Factor Arrows
235,579,068
Factor Arrows
217,789,534
Factor Arrows
28,894,767
Factor Arrows
71,270,681
Factor Arrows
2355,247
Factor Arrows
101547

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, 23, 101, 547

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 7 x 23 x 101 x 547 = 71,158,136

This can also be written as 23 x 71 x 231 x 1011 x 5471 = 71,158,136

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


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