Q: What are the prime factors of the number 402,660,564?

 A: 2, 3, 89, 181, 2083

Why are those the prime factors of the number 402,660,564?

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 402,660,564

402,660,564
Factor Arrows
2201,330,282
Factor Arrows
2100,665,141
Factor Arrows
333,555,047
Factor Arrows
89377,023
Factor Arrows
1812,083

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, 89, 181, 2083

We can check our work by multiplying all of the prime factors together: 2 x 2 x 3 x 89 x 181 x 2,083 = 402,660,564

This can also be written as 22 x 31 x 891 x 1811 x 2,0831 = 402,660,564

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


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