Q: What are the prime factors of the number 78,084,450?

 A: 2, 3, 5, 73, 2377

Why are those the prime factors of the number 78,084,450?

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 78,084,450

78,084,450
Factor Arrows
239,042,225
Factor Arrows
313,014,075
Factor Arrows
34,338,025
Factor Arrows
5867,605
Factor Arrows
5173,521
Factor Arrows
732,377

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, 5, 73, 2377

We can check our work by multiplying all of the prime factors together: 2 x 3 x 3 x 5 x 5 x 73 x 2,377 = 78,084,450

This can also be written as 21 x 32 x 52 x 731 x 2,3771 = 78,084,450

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


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