Q: What are the prime factors of the number 1,873,680?

 A: 2, 3, 5, 37, 211

Why are those the prime factors of the number 1,873,680?

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 1,873,680

1,873,680
Factor Arrows
2936,840
Factor Arrows
2468,420
Factor Arrows
2234,210
Factor Arrows
2117,105
Factor Arrows
339,035
Factor Arrows
57,807
Factor Arrows
37211

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, 37, 211

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 37 x 211 = 1,873,680

This can also be written as 24 x 31 x 51 x 371 x 2111 = 1,873,680

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


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