Q: What are the prime factors of the number 1,905,024?

 A: 2, 3, 11, 41

Why are those the prime factors of the number 1,905,024?

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 1,905,024

1,905,024
Factor Arrows
2952,512
Factor Arrows
2476,256
Factor Arrows
2238,128
Factor Arrows
2119,064
Factor Arrows
259,532
Factor Arrows
229,766
Factor Arrows
214,883
Factor Arrows
34,961
Factor Arrows
11451
Factor Arrows
1141

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, 11, 41

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 2 x 3 x 11 x 11 x 41 = 1,905,024

This can also be written as 27 x 31 x 112 x 411 = 1,905,024

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


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