Q: What are the prime factors of the number 245,110,110?

 A: 2, 3, 5, 7, 269, 4339

Why are those the prime factors of the number 245,110,110?

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 245,110,110

245,110,110
Factor Arrows
2122,555,055
Factor Arrows
340,851,685
Factor Arrows
58,170,337
Factor Arrows
71,167,191
Factor Arrows
2694,339

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, 7, 269, 4339

We can check our work by multiplying all of the prime factors together: 2 x 3 x 5 x 7 x 269 x 4,339 = 245,110,110

This can also be written as 21 x 31 x 51 x 71 x 2691 x 4,3391 = 245,110,110

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


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