Q: What are the prime factors of the number 111,356,140?

 A: 2, 5, 7, 127, 6263

Why are those the prime factors of the number 111,356,140?

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 111,356,140

111,356,140
Factor Arrows
255,678,070
Factor Arrows
227,839,035
Factor Arrows
55,567,807
Factor Arrows
7795,401
Factor Arrows
1276,263

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, 5, 7, 127, 6263

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 7 x 127 x 6,263 = 111,356,140

This can also be written as 22 x 51 x 71 x 1271 x 6,2631 = 111,356,140

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


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