Q: What are the prime factors of the number 3,718,880?

 A: 2, 5, 11, 2113

Why are those the prime factors of the number 3,718,880?

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 3,718,880

3,718,880
Factor Arrows
21,859,440
Factor Arrows
2929,720
Factor Arrows
2464,860
Factor Arrows
2232,430
Factor Arrows
2116,215
Factor Arrows
523,243
Factor Arrows
112,113

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, 11, 2113

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 2,113 = 3,718,880

This can also be written as 25 x 51 x 111 x 2,1131 = 3,718,880

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


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