Q: What are the prime factors of the number 440,145,024?

 A: 2, 3, 11, 79, 1319

Why are those the prime factors of the number 440,145,024?

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 440,145,024

440,145,024
Factor Arrows
2220,072,512
Factor Arrows
2110,036,256
Factor Arrows
255,018,128
Factor Arrows
227,509,064
Factor Arrows
213,754,532
Factor Arrows
26,877,266
Factor Arrows
23,438,633
Factor Arrows
31,146,211
Factor Arrows
11104,201
Factor Arrows
791,319

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, 11, 79, 1319

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 2 x 2 x 3 x 11 x 79 x 1,319 = 440,145,024

This can also be written as 27 x 31 x 111 x 791 x 1,3191 = 440,145,024

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


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