Q: What are the prime factors of the number 40,687,395?

 A: 3, 5, 7, 197, 281

Why are those the prime factors of the number 40,687,395?

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 40,687,395

40,687,395
Factor Arrows
313,562,465
Factor Arrows
52,712,493
Factor Arrows
7387,499
Factor Arrows
755,357
Factor Arrows
197281

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:

3, 5, 7, 197, 281

We can check our work by multiplying all of the prime factors together: 3 x 5 x 7 x 7 x 197 x 281 = 40,687,395

This can also be written as 31 x 51 x 72 x 1971 x 2811 = 40,687,395

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


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