Q: What are the prime factors of the number 13,842,378?

 A: 2, 3, 11, 69911

Why are those the prime factors of the number 13,842,378?

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 13,842,378

13,842,378
Factor Arrows
26,921,189
Factor Arrows
32,307,063
Factor Arrows
3769,021
Factor Arrows
1169,911

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, 11, 69911

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 11 x 69,911 = 13,842,378

This can also be written as 21 x 32 x 111 x 69,9111 = 13,842,378

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


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