Q: What are the prime factors of the number 1,795,840?

 A: 2, 5, 23, 61

Why are those the prime factors of the number 1,795,840?

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 1,795,840

1,795,840
Factor Arrows
2897,920
Factor Arrows
2448,960
Factor Arrows
2224,480
Factor Arrows
2112,240
Factor Arrows
256,120
Factor Arrows
228,060
Factor Arrows
214,030
Factor Arrows
27,015
Factor Arrows
51,403
Factor Arrows
2361

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, 23, 61

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 2 x 5 x 23 x 61 = 1,795,840

This can also be written as 28 x 51 x 231 x 611 = 1,795,840

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


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