Q: What are the prime factors of the number 858,864?

 A: 2, 3, 29, 617

Why are those the prime factors of the number 858,864?

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 858,864

858,864
Factor Arrows
2429,432
Factor Arrows
2214,716
Factor Arrows
2107,358
Factor Arrows
253,679
Factor Arrows
317,893
Factor Arrows
29617

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, 29, 617

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 29 x 617 = 858,864

This can also be written as 24 x 31 x 291 x 6171 = 858,864

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


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