Q: What are the prime factors of the number 812,154?

 A: 2, 3, 7, 61, 317

Why are those the prime factors of the number 812,154?

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 812,154

812,154
Factor Arrows
2406,077
Factor Arrows
3135,359
Factor Arrows
719,337
Factor Arrows
61317

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, 61, 317

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 61 x 317 = 812,154

This can also be written as 21 x 31 x 71 x 611 x 3171 = 812,154

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


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