Q: What are the prime factors of the number 1,505,826?

 A: 2, 3, 7, 17, 19, 37

Why are those the prime factors of the number 1,505,826?

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 1,505,826

1,505,826
Factor Arrows
2752,913
Factor Arrows
3250,971
Factor Arrows
383,657
Factor Arrows
711,951
Factor Arrows
17703
Factor Arrows
1937

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, 7, 17, 19, 37

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 7 x 17 x 19 x 37 = 1,505,826

This can also be written as 21 x 32 x 71 x 171 x 191 x 371 = 1,505,826

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


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