Q: What are the prime factors of the number 240,824,620?

 A: 2, 5, 19, 197, 3217

Why are those the prime factors of the number 240,824,620?

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 240,824,620

240,824,620
Factor Arrows
2120,412,310
Factor Arrows
260,206,155
Factor Arrows
512,041,231
Factor Arrows
19633,749
Factor Arrows
1973,217

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, 19, 197, 3217

We can check our work by multiplying all of the prime factors together: 2 x 2 x 5 x 19 x 197 x 3,217 = 240,824,620

This can also be written as 22 x 51 x 191 x 1971 x 3,2171 = 240,824,620

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


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