Q: What are the prime factors of the number 40,105,758?

 A: 2, 3, 7, 11, 47, 1847

Why are those the prime factors of the number 40,105,758?

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 40,105,758

40,105,758
Factor Arrows
220,052,879
Factor Arrows
36,684,293
Factor Arrows
7954,899
Factor Arrows
1186,809
Factor Arrows
471,847

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, 11, 47, 1847

We can check our work by multiplying all of the prime factors together: 2 x 3 x 7 x 11 x 47 x 1,847 = 40,105,758

This can also be written as 21 x 31 x 71 x 111 x 471 x 1,8471 = 40,105,758

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


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