Q: What are the prime factors of the number 421,324,112?

 A: 2, 11, 1181, 2027

Why are those the prime factors of the number 421,324,112?

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 421,324,112

421,324,112
Factor Arrows
2210,662,056
Factor Arrows
2105,331,028
Factor Arrows
252,665,514
Factor Arrows
226,332,757
Factor Arrows
112,393,887
Factor Arrows
1,1812,027

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, 11, 1181, 2027

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 1,181 x 2,027 = 421,324,112

This can also be written as 24 x 111 x 1,1811 x 2,0271 = 421,324,112

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


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