Q: What are the prime factors of the number 61,540,608?

 A: 2, 3, 227, 353

Why are those the prime factors of the number 61,540,608?

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 61,540,608

61,540,608
Factor Arrows
230,770,304
Factor Arrows
215,385,152
Factor Arrows
27,692,576
Factor Arrows
23,846,288
Factor Arrows
21,923,144
Factor Arrows
2961,572
Factor Arrows
2480,786
Factor Arrows
2240,393
Factor Arrows
380,131
Factor Arrows
227353

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, 227, 353

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 2 x 3 x 227 x 353 = 61,540,608

This can also be written as 28 x 31 x 2271 x 3531 = 61,540,608

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


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