Q: What are the prime factors of the number 101,203,125?

 A: 3, 5, 17, 127

Why are those the prime factors of the number 101,203,125?

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 101,203,125

101,203,125
Factor Arrows
333,734,375
Factor Arrows
56,746,875
Factor Arrows
51,349,375
Factor Arrows
5269,875
Factor Arrows
553,975
Factor Arrows
510,795
Factor Arrows
52,159
Factor Arrows
17127

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:

3, 5, 17, 127

We can check our work by multiplying all of the prime factors together: 3 x 5 x 5 x 5 x 5 x 5 x 5 x 17 x 127 = 101,203,125

This can also be written as 31 x 56 x 171 x 1271 = 101,203,125

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


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