Q: What are the prime factors of the number 208,711,443?

 A: 3, 41, 47, 79, 457

Why are those the prime factors of the number 208,711,443?

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 208,711,443

208,711,443
Factor Arrows
369,570,481
Factor Arrows
411,696,841
Factor Arrows
4736,103
Factor Arrows
79457

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:

3, 41, 47, 79, 457

We can check our work by multiplying all of the prime factors together: 3 x 41 x 47 x 79 x 457 = 208,711,443

This can also be written as 31 x 411 x 471 x 791 x 4571 = 208,711,443

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


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