Q: What are the prime factors of the number 1,844,370?

 A: 2, 3, 5, 11, 23

Why are those the prime factors of the number 1,844,370?

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 1,844,370

1,844,370
Factor Arrows
2922,185
Factor Arrows
3307,395
Factor Arrows
3102,465
Factor Arrows
334,155
Factor Arrows
311,385
Factor Arrows
33,795
Factor Arrows
31,265
Factor Arrows
5253
Factor Arrows
1123

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, 11, 23

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 3 x 3 x 3 x 3 x 5 x 11 x 23 = 1,844,370

This can also be written as 21 x 36 x 51 x 111 x 231 = 1,844,370

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


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