Q: What are the prime factors of the number 16,077,840?

 A: 2, 3, 5, 31, 2161

Why are those the prime factors of the number 16,077,840?

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 16,077,840

16,077,840
Factor Arrows
28,038,920
Factor Arrows
24,019,460
Factor Arrows
22,009,730
Factor Arrows
21,004,865
Factor Arrows
3334,955
Factor Arrows
566,991
Factor Arrows
312,161

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, 5, 31, 2161

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 31 x 2,161 = 16,077,840

This can also be written as 24 x 31 x 51 x 311 x 2,1611 = 16,077,840

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


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