Q: What are the prime factors of the number 100,707,456?

 A: 2, 3, 17, 15427

Why are those the prime factors of the number 100,707,456?

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 100,707,456

100,707,456
Factor Arrows
250,353,728
Factor Arrows
225,176,864
Factor Arrows
212,588,432
Factor Arrows
26,294,216
Factor Arrows
23,147,108
Factor Arrows
21,573,554
Factor Arrows
2786,777
Factor Arrows
3262,259
Factor Arrows
1715,427

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, 17, 15427

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 3 x 17 x 15,427 = 100,707,456

This can also be written as 27 x 31 x 171 x 15,4271 = 100,707,456

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


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