Q: What are the prime factors of the number 30,949,376?

 A: 2, 1889

Why are those the prime factors of the number 30,949,376?

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 30,949,376

30,949,376
Factor Arrows
215,474,688
Factor Arrows
27,737,344
Factor Arrows
23,868,672
Factor Arrows
21,934,336
Factor Arrows
2967,168
Factor Arrows
2483,584
Factor Arrows
2241,792
Factor Arrows
2120,896
Factor Arrows
260,448
Factor Arrows
230,224
Factor Arrows
215,112
Factor Arrows
27,556
Factor Arrows
23,778
Factor Arrows
21,889

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, 1889

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 2 x 2 x 2 x 2 x 2 x 1,889 = 30,949,376

This can also be written as 214 x 1,8891 = 30,949,376

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


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