Q: What are the prime factors of the number 40,043,374?

 A: 2, 7, 19, 29, 179

Why are those the prime factors of the number 40,043,374?

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 40,043,374

40,043,374
Factor Arrows
220,021,687
Factor Arrows
72,860,241
Factor Arrows
19150,539
Factor Arrows
295,191
Factor Arrows
29179

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, 7, 19, 29, 179

We can check our work by multiplying all of the prime factors together: 2 x 7 x 19 x 29 x 29 x 179 = 40,043,374

This can also be written as 21 x 71 x 191 x 292 x 1791 = 40,043,374

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


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