Q: What are the prime factors of the number 78,198,896?

 A: 2, 23, 9239

Why are those the prime factors of the number 78,198,896?

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 78,198,896

78,198,896
Factor Arrows
239,099,448
Factor Arrows
219,549,724
Factor Arrows
29,774,862
Factor Arrows
24,887,431
Factor Arrows
23212,497
Factor Arrows
239,239

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, 23, 9239

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 23 x 23 x 9,239 = 78,198,896

This can also be written as 24 x 232 x 9,2391 = 78,198,896

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


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