Q: What are the prime factors of the number 1,779,960?

 A: 2, 3, 5, 7, 13, 163

Why are those the prime factors of the number 1,779,960?

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 1,779,960

1,779,960
Factor Arrows
2889,980
Factor Arrows
2444,990
Factor Arrows
2222,495
Factor Arrows
374,165
Factor Arrows
514,833
Factor Arrows
72,119
Factor Arrows
13163

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, 7, 13, 163

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 5 x 7 x 13 x 163 = 1,779,960

This can also be written as 23 x 31 x 51 x 71 x 131 x 1631 = 1,779,960

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


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