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What Prime Numbers Equal 21?




When we say "What prime numbers equal 21?" we mean what prime numbers can you multiply together to get 21.

21 has a unique set of prime factors that no other number has. The prime factors of 21 are 3, 7.

The Prime Factors of 21 multiplied together is the same as the Prime Numbers that you would multiply together to get 21.

Therefore, the answer to "What prime numbers equal 21?" is as follows:

3 x 7 = 21




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What Prime Numbers Equal 22?
The answer to "What prime numbers equal 21?" is not the only answer we know. Go here for the next number on our list.


 


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