Q: What are the prime factors of the number 47,605,376?

 A: 2, 7, 13, 61, 67

Why are those the prime factors of the number 47,605,376?

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 47,605,376

47,605,376
Factor Arrows
223,802,688
Factor Arrows
211,901,344
Factor Arrows
25,950,672
Factor Arrows
22,975,336
Factor Arrows
21,487,668
Factor Arrows
2743,834
Factor Arrows
2371,917
Factor Arrows
753,131
Factor Arrows
134,087
Factor Arrows
6167

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, 13, 61, 67

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 7 x 13 x 61 x 67 = 47,605,376

This can also be written as 27 x 71 x 131 x 611 x 671 = 47,605,376

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


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