Q: What are the prime factors of the number 101,140,445?

 A: 5, 7, 31, 97

Why are those the prime factors of the number 101,140,445?

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 101,140,445

101,140,445
Factor Arrows
520,228,089
Factor Arrows
72,889,727
Factor Arrows
3193,217
Factor Arrows
313,007
Factor Arrows
3197

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:

5, 7, 31, 97

We can check our work by multiplying all of the prime factors together: 5 x 7 x 31 x 31 x 31 x 97 = 101,140,445

This can also be written as 51 x 71 x 313 x 971 = 101,140,445

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


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