Q: What are the prime factors of the number 53,401,440?

 A: 2, 3, 5, 111253

Why are those the prime factors of the number 53,401,440?

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 53,401,440

53,401,440
Factor Arrows
226,700,720
Factor Arrows
213,350,360
Factor Arrows
26,675,180
Factor Arrows
23,337,590
Factor Arrows
21,668,795
Factor Arrows
3556,265
Factor Arrows
5111,253

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, 111253

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 3 x 5 x 111,253 = 53,401,440

This can also be written as 25 x 31 x 51 x 111,2531 = 53,401,440

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


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