Q: What are the prime factors of the number 140,340,144?

 A: 2, 3, 7, 223, 1873

Why are those the prime factors of the number 140,340,144?

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 140,340,144

140,340,144
Factor Arrows
270,170,072
Factor Arrows
235,085,036
Factor Arrows
217,542,518
Factor Arrows
28,771,259
Factor Arrows
32,923,753
Factor Arrows
7417,679
Factor Arrows
2231,873

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, 7, 223, 1873

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 7 x 223 x 1,873 = 140,340,144

This can also be written as 24 x 31 x 71 x 2231 x 1,8731 = 140,340,144

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


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