Q: What are the prime factors of the number 1,985,320?

 A: 2, 5, 49633

Why are those the prime factors of the number 1,985,320?

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 1,985,320

1,985,320
Factor Arrows
2992,660
Factor Arrows
2496,330
Factor Arrows
2248,165
Factor Arrows
549,633

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, 5, 49633

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 5 x 49,633 = 1,985,320

This can also be written as 23 x 51 x 49,6331 = 1,985,320

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


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