Q: What are the prime factors of the number 8,146,820?

 A: 2, 5, 11, 19, 1949

Why are those the prime factors of the number 8,146,820?

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 8,146,820

8,146,820
Factor Arrows
24,073,410
Factor Arrows
22,036,705
Factor Arrows
5407,341
Factor Arrows
1137,031
Factor Arrows
191,949

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, 5, 11, 19, 1949

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 11 x 19 x 1,949 = 8,146,820

This can also be written as 22 x 51 x 111 x 191 x 1,9491 = 8,146,820

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


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