Q: What are the prime factors of the number 71,878,212?

 A: 2, 3, 7, 31, 3067

Why are those the prime factors of the number 71,878,212?

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 71,878,212

71,878,212
Factor Arrows
235,939,106
Factor Arrows
217,969,553
Factor Arrows
35,989,851
Factor Arrows
31,996,617
Factor Arrows
3665,539
Factor Arrows
795,077
Factor Arrows
313,067

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, 7, 31, 3067

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 7 x 31 x 3,067 = 71,878,212

This can also be written as 22 x 33 x 71 x 311 x 3,0671 = 71,878,212

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


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