Q: What are the prime factors of the number 297,481,128?

 A: 2, 3, 7, 139, 12739

Why are those the prime factors of the number 297,481,128?

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 297,481,128

297,481,128
Factor Arrows
2148,740,564
Factor Arrows
274,370,282
Factor Arrows
237,185,141
Factor Arrows
312,395,047
Factor Arrows
71,770,721
Factor Arrows
13912,739

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, 7, 139, 12739

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 3 x 7 x 139 x 12,739 = 297,481,128

This can also be written as 23 x 31 x 71 x 1391 x 12,7391 = 297,481,128

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


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