Q: What are the prime factors of the number 43,870,080?

 A: 2, 3, 5, 73, 313

Why are those the prime factors of the number 43,870,080?

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 43,870,080

43,870,080
Factor Arrows
221,935,040
Factor Arrows
210,967,520
Factor Arrows
25,483,760
Factor Arrows
22,741,880
Factor Arrows
21,370,940
Factor Arrows
2685,470
Factor Arrows
2342,735
Factor Arrows
3114,245
Factor Arrows
522,849
Factor Arrows
73313

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, 73, 313

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 5 x 73 x 313 = 43,870,080

This can also be written as 27 x 31 x 51 x 731 x 3131 = 43,870,080

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


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