Q: What are the prime factors of the number 158,623,245?

 A: 3, 5, 11, 223, 479

Why are those the prime factors of the number 158,623,245?

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 158,623,245

158,623,245
Factor Arrows
352,874,415
Factor Arrows
317,624,805
Factor Arrows
35,874,935
Factor Arrows
51,174,987
Factor Arrows
11106,817
Factor Arrows
223479

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, 11, 223, 479

We can check our work by multiplying all of the prime factors together: 3 x 3 x 3 x 5 x 11 x 223 x 479 = 158,623,245

This can also be written as 33 x 51 x 111 x 2231 x 4791 = 158,623,245

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


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