Q: What are the prime factors of the number 777,740,000?

 A: 2, 5, 37, 1051

Why are those the prime factors of the number 777,740,000?

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 777,740,000

777,740,000
Factor Arrows
2388,870,000
Factor Arrows
2194,435,000
Factor Arrows
297,217,500
Factor Arrows
248,608,750
Factor Arrows
224,304,375
Factor Arrows
54,860,875
Factor Arrows
5972,175
Factor Arrows
5194,435
Factor Arrows
538,887
Factor Arrows
371,051

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, 5, 37, 1051

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 2 x 5 x 5 x 5 x 5 x 37 x 1,051 = 777,740,000

This can also be written as 25 x 54 x 371 x 1,0511 = 777,740,000

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


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