Q: What are the prime factors of the number 81,368,350?

 A: 2, 5, 7, 383, 607

Why are those the prime factors of the number 81,368,350?

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 81,368,350

81,368,350
Factor Arrows
240,684,175
Factor Arrows
58,136,835
Factor Arrows
51,627,367
Factor Arrows
7232,481
Factor Arrows
383607

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, 7, 383, 607

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 7 x 383 x 607 = 81,368,350

This can also be written as 21 x 52 x 71 x 3831 x 6071 = 81,368,350

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


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