Q: What are the prime factors of the number 141,415,040?

 A: 2, 5, 13, 23, 739

Why are those the prime factors of the number 141,415,040?

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 141,415,040

141,415,040
Factor Arrows
270,707,520
Factor Arrows
235,353,760
Factor Arrows
217,676,880
Factor Arrows
28,838,440
Factor Arrows
24,419,220
Factor Arrows
22,209,610
Factor Arrows
21,104,805
Factor Arrows
5220,961
Factor Arrows
1316,997
Factor Arrows
23739

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, 13, 23, 739

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 5 x 13 x 23 x 739 = 141,415,040

This can also be written as 27 x 51 x 131 x 231 x 7391 = 141,415,040

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


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