Q: What are the prime factors of the number 31,555,563?

 A: 3, 13, 23, 127, 277

Why are those the prime factors of the number 31,555,563?

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 31,555,563

31,555,563
Factor Arrows
310,518,521
Factor Arrows
13809,117
Factor Arrows
2335,179
Factor Arrows
127277

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, 13, 23, 127, 277

We can check our work by multiplying all of the prime factors together: 3 x 13 x 23 x 127 x 277 = 31,555,563

This can also be written as 31 x 131 x 231 x 1271 x 2771 = 31,555,563

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


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