Q: What are the prime factors of the number 443,342,240?

 A: 2, 5, 11, 109, 2311

Why are those the prime factors of the number 443,342,240?

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 443,342,240

443,342,240
Factor Arrows
2221,671,120
Factor Arrows
2110,835,560
Factor Arrows
255,417,780
Factor Arrows
227,708,890
Factor Arrows
213,854,445
Factor Arrows
52,770,889
Factor Arrows
11251,899
Factor Arrows
1092,311

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, 11, 109, 2311

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 11 x 109 x 2,311 = 443,342,240

This can also be written as 25 x 51 x 111 x 1091 x 2,3111 = 443,342,240

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


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