Q: What are the prime factors of the number 858,081?

 A: 3, 7, 29, 1409

Why are those the prime factors of the number 858,081?

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 858,081

858,081
Factor Arrows
3286,027
Factor Arrows
740,861
Factor Arrows
291,409

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:

3, 7, 29, 1409

We can check our work by multiplying all of the prime factors together: 3 x 7 x 29 x 1,409 = 858,081

This can also be written as 31 x 71 x 291 x 1,4091 = 858,081

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


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