Q: What are the prime factors of the number 2,650,368?

 A: 2, 3, 7, 17, 29

Why are those the prime factors of the number 2,650,368?

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 2,650,368

2,650,368
Factor Arrows
21,325,184
Factor Arrows
2662,592
Factor Arrows
2331,296
Factor Arrows
2165,648
Factor Arrows
282,824
Factor Arrows
241,412
Factor Arrows
220,706
Factor Arrows
210,353
Factor Arrows
33,451
Factor Arrows
7493
Factor Arrows
1729

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, 7, 17, 29

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 3 x 7 x 17 x 29 = 2,650,368

This can also be written as 28 x 31 x 71 x 171 x 291 = 2,650,368

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


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