Q: What are the prime factors of the number 841,682,140?

 A: 2, 5, 13, 19, 67, 2543

Why are those the prime factors of the number 841,682,140?

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 841,682,140

841,682,140
Factor Arrows
2420,841,070
Factor Arrows
2210,420,535
Factor Arrows
542,084,107
Factor Arrows
133,237,239
Factor Arrows
19170,381
Factor Arrows
672,543

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, 5, 13, 19, 67, 2543

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 13 x 19 x 67 x 2,543 = 841,682,140

This can also be written as 22 x 51 x 131 x 191 x 671 x 2,5431 = 841,682,140

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


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