Q: What are the prime factors of the number 77,220,608?

 A: 2, 301643

Why are those the prime factors of the number 77,220,608?

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 77,220,608

77,220,608
Factor Arrows
238,610,304
Factor Arrows
219,305,152
Factor Arrows
29,652,576
Factor Arrows
24,826,288
Factor Arrows
22,413,144
Factor Arrows
21,206,572
Factor Arrows
2603,286
Factor Arrows
2301,643

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, 301643

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 301,643 = 77,220,608

This can also be written as 28 x 301,6431 = 77,220,608

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


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