Q: What are the prime factors of the number 403,440,300?

 A: 2, 3, 5, 19, 23593

Why are those the prime factors of the number 403,440,300?

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 403,440,300

403,440,300
Factor Arrows
2201,720,150
Factor Arrows
2100,860,075
Factor Arrows
333,620,025
Factor Arrows
311,206,675
Factor Arrows
52,241,335
Factor Arrows
5448,267
Factor Arrows
1923,593

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, 19, 23593

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 3 x 5 x 5 x 19 x 23,593 = 403,440,300

This can also be written as 22 x 32 x 52 x 191 x 23,5931 = 403,440,300

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


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