Q: What are the prime factors of the number 420,140,412?

 A: 2, 3, 3890189

Why are those the prime factors of the number 420,140,412?

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 420,140,412

420,140,412
Factor Arrows
2210,070,206
Factor Arrows
2105,035,103
Factor Arrows
335,011,701
Factor Arrows
311,670,567
Factor Arrows
33,890,189

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, 3890189

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 3 x 3,890,189 = 420,140,412

This can also be written as 22 x 33 x 3,890,1891 = 420,140,412

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


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