Q: What are the prime factors of the number 23,141,440?

 A: 2, 5, 7, 10331

Why are those the prime factors of the number 23,141,440?

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 23,141,440

23,141,440
Factor Arrows
211,570,720
Factor Arrows
25,785,360
Factor Arrows
22,892,680
Factor Arrows
21,446,340
Factor Arrows
2723,170
Factor Arrows
2361,585
Factor Arrows
572,317
Factor Arrows
710,331

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, 10331

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 5 x 7 x 10,331 = 23,141,440

This can also be written as 26 x 51 x 71 x 10,3311 = 23,141,440

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


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