Q: What are the prime factors of the number 102,512,410?

 A: 2, 5, 7, 11, 13, 19

Why are those the prime factors of the number 102,512,410?

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 102,512,410

102,512,410
Factor Arrows
251,256,205
Factor Arrows
510,251,241
Factor Arrows
71,464,463
Factor Arrows
7209,209
Factor Arrows
729,887
Factor Arrows
112,717
Factor Arrows
11247
Factor Arrows
1319

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, 5, 7, 11, 13, 19

We can check our work by multiplying all of the prime factors together: 2 x 5 x 7 x 7 x 7 x 11 x 11 x 13 x 19 = 102,512,410

This can also be written as 21 x 51 x 73 x 112 x 131 x 191 = 102,512,410

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


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