Q: What are the prime factors of the number 242,131,440?

 A: 2, 3, 5, 19, 29, 1831

Why are those the prime factors of the number 242,131,440?

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 242,131,440

242,131,440
Factor Arrows
2121,065,720
Factor Arrows
260,532,860
Factor Arrows
230,266,430
Factor Arrows
215,133,215
Factor Arrows
35,044,405
Factor Arrows
51,008,881
Factor Arrows
1953,099
Factor Arrows
291,831

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, 19, 29, 1831

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 5 x 19 x 29 x 1,831 = 242,131,440

This can also be written as 24 x 31 x 51 x 191 x 291 x 1,8311 = 242,131,440

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


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