Q: What are the prime factors of the number 350,821,440?

 A: 2, 3, 5, 181, 673

Why are those the prime factors of the number 350,821,440?

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 350,821,440

350,821,440
Factor Arrows
2175,410,720
Factor Arrows
287,705,360
Factor Arrows
243,852,680
Factor Arrows
221,926,340
Factor Arrows
210,963,170
Factor Arrows
25,481,585
Factor Arrows
31,827,195
Factor Arrows
3609,065
Factor Arrows
5121,813
Factor Arrows
181673

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, 3, 5, 181, 673

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 3 x 3 x 5 x 181 x 673 = 350,821,440

This can also be written as 26 x 32 x 51 x 1811 x 6731 = 350,821,440

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


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