Q: What are the prime factors of the number 10,400,771?

 A: 19, 47, 613

Why are those the prime factors of the number 10,400,771?

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 10,400,771

10,400,771
Factor Arrows
19547,409
Factor Arrows
1928,811
Factor Arrows
47613

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:

19, 47, 613

We can check our work by multiplying all of the prime factors together: 19 x 19 x 47 x 613 = 10,400,771

This can also be written as 192 x 471 x 6131 = 10,400,771

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


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