Q: What are the prime factors of the number 30,477,056?

 A: 2, 17, 47, 149

Why are those the prime factors of the number 30,477,056?

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 30,477,056

30,477,056
Factor Arrows
215,238,528
Factor Arrows
27,619,264
Factor Arrows
23,809,632
Factor Arrows
21,904,816
Factor Arrows
2952,408
Factor Arrows
2476,204
Factor Arrows
2238,102
Factor Arrows
2119,051
Factor Arrows
177,003
Factor Arrows
47149

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, 17, 47, 149

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 17 x 47 x 149 = 30,477,056

This can also be written as 28 x 171 x 471 x 1491 = 30,477,056

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


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