Q: What are the prime factors of the number 156,850,176?

 A: 2, 3, 7, 521

Why are those the prime factors of the number 156,850,176?

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 156,850,176

156,850,176
Factor Arrows
278,425,088
Factor Arrows
239,212,544
Factor Arrows
219,606,272
Factor Arrows
29,803,136
Factor Arrows
24,901,568
Factor Arrows
22,450,784
Factor Arrows
21,225,392
Factor Arrows
2612,696
Factor Arrows
2306,348
Factor Arrows
2153,174
Factor Arrows
276,587
Factor Arrows
325,529
Factor Arrows
73,647
Factor Arrows
7521

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, 7, 521

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 2 x 2 x 2 x 2 x 2 x 3 x 7 x 7 x 521 = 156,850,176

This can also be written as 211 x 31 x 72 x 5211 = 156,850,176

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


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