Q: What are the prime factors of the number 71,324,380?

 A: 2, 5, 23, 47, 3299

Why are those the prime factors of the number 71,324,380?

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 71,324,380

71,324,380
Factor Arrows
235,662,190
Factor Arrows
217,831,095
Factor Arrows
53,566,219
Factor Arrows
23155,053
Factor Arrows
473,299

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, 5, 23, 47, 3299

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 23 x 47 x 3,299 = 71,324,380

This can also be written as 22 x 51 x 231 x 471 x 3,2991 = 71,324,380

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


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