Q: What are the prime factors of the number 75,347,776?

 A: 2, 7, 109, 1543

Why are those the prime factors of the number 75,347,776?

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 75,347,776

75,347,776
Factor Arrows
237,673,888
Factor Arrows
218,836,944
Factor Arrows
29,418,472
Factor Arrows
24,709,236
Factor Arrows
22,354,618
Factor Arrows
21,177,309
Factor Arrows
7168,187
Factor Arrows
1091,543

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, 7, 109, 1543

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 7 x 109 x 1,543 = 75,347,776

This can also be written as 26 x 71 x 1091 x 1,5431 = 75,347,776

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


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