Q: What are the prime factors of the number 5,778,640?

 A: 2, 5, 7, 17, 607

Why are those the prime factors of the number 5,778,640?

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 5,778,640

5,778,640
Factor Arrows
22,889,320
Factor Arrows
21,444,660
Factor Arrows
2722,330
Factor Arrows
2361,165
Factor Arrows
572,233
Factor Arrows
710,319
Factor Arrows
17607

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, 7, 17, 607

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 7 x 17 x 607 = 5,778,640

This can also be written as 24 x 51 x 71 x 171 x 6071 = 5,778,640

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


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