Q: What are the prime factors of the number 861,948?

 A: 2, 3, 23, 347

Why are those the prime factors of the number 861,948?

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 861,948

861,948
Factor Arrows
2430,974
Factor Arrows
2215,487
Factor Arrows
371,829
Factor Arrows
323,943
Factor Arrows
37,981
Factor Arrows
23347

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, 3, 23, 347

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 23 x 347 = 861,948

This can also be written as 22 x 33 x 231 x 3471 = 861,948

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


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