Q: What are the prime factors of the number 100,220,416?

 A: 2, 195743

Why are those the prime factors of the number 100,220,416?

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 100,220,416

100,220,416
Factor Arrows
250,110,208
Factor Arrows
225,055,104
Factor Arrows
212,527,552
Factor Arrows
26,263,776
Factor Arrows
23,131,888
Factor Arrows
21,565,944
Factor Arrows
2782,972
Factor Arrows
2391,486
Factor Arrows
2195,743

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, 195743

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 195,743 = 100,220,416

This can also be written as 29 x 195,7431 = 100,220,416

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


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