Q: What are the prime factors of the number 221,246,650?

 A: 2, 5, 71, 62323

Why are those the prime factors of the number 221,246,650?

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 221,246,650

221,246,650
Factor Arrows
2110,623,325
Factor Arrows
522,124,665
Factor Arrows
54,424,933
Factor Arrows
7162,323

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, 71, 62323

We can check our work by multiplying all of the prime factors together: 2 x 5 x 5 x 71 x 62,323 = 221,246,650

This can also be written as 21 x 52 x 711 x 62,3231 = 221,246,650

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


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