Q: What are the prime factors of the number 7,878,192?

 A: 2, 3, 7, 23447

Why are those the prime factors of the number 7,878,192?

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 7,878,192

7,878,192
Factor Arrows
23,939,096
Factor Arrows
21,969,548
Factor Arrows
2984,774
Factor Arrows
2492,387
Factor Arrows
3164,129
Factor Arrows
723,447

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, 7, 23447

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 23,447 = 7,878,192

This can also be written as 24 x 31 x 71 x 23,4471 = 7,878,192

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


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