Q: What are the prime factors of the number 141,216,816?

 A: 2, 3, 13, 19, 43, 277

Why are those the prime factors of the number 141,216,816?

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 141,216,816

141,216,816
Factor Arrows
270,608,408
Factor Arrows
235,304,204
Factor Arrows
217,652,102
Factor Arrows
28,826,051
Factor Arrows
32,942,017
Factor Arrows
13226,309
Factor Arrows
1911,911
Factor Arrows
43277

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, 19, 43, 277

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 13 x 19 x 43 x 277 = 141,216,816

This can also be written as 24 x 31 x 131 x 191 x 431 x 2771 = 141,216,816

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


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