Q: What are the prime factors of the number 2,176,512?

 A: 2, 3, 13, 109

Why are those the prime factors of the number 2,176,512?

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 2,176,512

2,176,512
Factor Arrows
21,088,256
Factor Arrows
2544,128
Factor Arrows
2272,064
Factor Arrows
2136,032
Factor Arrows
268,016
Factor Arrows
234,008
Factor Arrows
217,004
Factor Arrows
28,502
Factor Arrows
24,251
Factor Arrows
31,417
Factor Arrows
13109

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, 109

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 13 x 109 = 2,176,512

This can also be written as 29 x 31 x 131 x 1091 = 2,176,512

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


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