Q: What are the prime factors of the number 102,145,208?

 A: 2, 11, 23, 109, 463

Why are those the prime factors of the number 102,145,208?

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 102,145,208

102,145,208
Factor Arrows
251,072,604
Factor Arrows
225,536,302
Factor Arrows
212,768,151
Factor Arrows
111,160,741
Factor Arrows
2350,467
Factor Arrows
109463

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, 11, 23, 109, 463

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 11 x 23 x 109 x 463 = 102,145,208

This can also be written as 23 x 111 x 231 x 1091 x 4631 = 102,145,208

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


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