Q: What are the prime factors of the number 402,001,424?

 A: 2, 11, 233, 9803

Why are those the prime factors of the number 402,001,424?

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 402,001,424

402,001,424
Factor Arrows
2201,000,712
Factor Arrows
2100,500,356
Factor Arrows
250,250,178
Factor Arrows
225,125,089
Factor Arrows
112,284,099
Factor Arrows
2339,803

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, 11, 233, 9803

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 11 x 233 x 9,803 = 402,001,424

This can also be written as 24 x 111 x 2331 x 9,8031 = 402,001,424

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


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