Q: What are the prime factors of the number 308,057,040?

 A: 2, 3, 5, 142619

Why are those the prime factors of the number 308,057,040?

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 308,057,040

308,057,040
Factor Arrows
2154,028,520
Factor Arrows
277,014,260
Factor Arrows
238,507,130
Factor Arrows
219,253,565
Factor Arrows
36,417,855
Factor Arrows
32,139,285
Factor Arrows
3713,095
Factor Arrows
5142,619

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, 142619

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 3 x 3 x 5 x 142,619 = 308,057,040

This can also be written as 24 x 33 x 51 x 142,6191 = 308,057,040

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


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