Q: What are the prime factors of the number 102,147,144?

 A: 2, 3, 11, 386921

Why are those the prime factors of the number 102,147,144?

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 102,147,144

102,147,144
Factor Arrows
251,073,572
Factor Arrows
225,536,786
Factor Arrows
212,768,393
Factor Arrows
34,256,131
Factor Arrows
11386,921

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, 11, 386921

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 11 x 386,921 = 102,147,144

This can also be written as 23 x 31 x 111 x 386,9211 = 102,147,144

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


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