Q: What are the prime factors of the number 531,146,544?

 A: 2, 3, 23, 37, 13003

Why are those the prime factors of the number 531,146,544?

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 531,146,544

531,146,544
Factor Arrows
2265,573,272
Factor Arrows
2132,786,636
Factor Arrows
266,393,318
Factor Arrows
233,196,659
Factor Arrows
311,065,553
Factor Arrows
23481,111
Factor Arrows
3713,003

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, 23, 37, 13003

We can check our work by multiplying all of the prime factors together: 2 x 2 x 2 x 2 x 3 x 23 x 37 x 13,003 = 531,146,544

This can also be written as 24 x 31 x 231 x 371 x 13,0031 = 531,146,544

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


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