Q: What are the prime factors of the number 7,890,858?

 A: 2, 3, 67, 727

Why are those the prime factors of the number 7,890,858?

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 7,890,858

7,890,858
Factor Arrows
23,945,429
Factor Arrows
31,315,143
Factor Arrows
3438,381
Factor Arrows
3146,127
Factor Arrows
348,709
Factor Arrows
67727

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, 67, 727

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 67 x 727 = 7,890,858

This can also be written as 21 x 34 x 671 x 7271 = 7,890,858

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


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