Q: What are the prime factors of the number 222,311,440?

 A: 2, 5, 13, 181, 1181

Why are those the prime factors of the number 222,311,440?

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 222,311,440

222,311,440
Factor Arrows
2111,155,720
Factor Arrows
255,577,860
Factor Arrows
227,788,930
Factor Arrows
213,894,465
Factor Arrows
52,778,893
Factor Arrows
13213,761
Factor Arrows
1811,181

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, 13, 181, 1181

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 5 x 13 x 181 x 1,181 = 222,311,440

This can also be written as 24 x 51 x 131 x 1811 x 1,1811 = 222,311,440

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


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