Q: What are the prime factors of the number 10,003,968?

 A: 2, 3, 13, 167

Why are those the prime factors of the number 10,003,968?

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 10,003,968

10,003,968
Factor Arrows
25,001,984
Factor Arrows
22,500,992
Factor Arrows
21,250,496
Factor Arrows
2625,248
Factor Arrows
2312,624
Factor Arrows
2156,312
Factor Arrows
278,156
Factor Arrows
239,078
Factor Arrows
219,539
Factor Arrows
36,513
Factor Arrows
32,171
Factor Arrows
13167

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, 13, 167

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 3 x 13 x 167 = 10,003,968

This can also be written as 29 x 32 x 131 x 1671 = 10,003,968

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


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