Q: What are the prime factors of the number 291,858?

 A: 2, 3, 7, 6949

Why are those the prime factors of the number 291,858?

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 291,858

291,858
Factor Arrows
2145,929
Factor Arrows
348,643
Factor Arrows
76,949

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, 7, 6949

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 6,949 = 291,858

This can also be written as 21 x 31 x 71 x 6,9491 = 291,858

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


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