Q: What are the prime factors of the number 10,155,213?

 A: 3, 23, 79

Why are those the prime factors of the number 10,155,213?

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 10,155,213

10,155,213
Factor Arrows
33,385,071
Factor Arrows
31,128,357
Factor Arrows
3376,119
Factor Arrows
3125,373
Factor Arrows
341,791
Factor Arrows
231,817
Factor Arrows
2379

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, 23, 79

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 3 x 3 x 23 x 23 x 79 = 10,155,213

This can also be written as 35 x 232 x 791 = 10,155,213

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


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