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67 is a Prime number, but 21 isn't.
A prime number can only be evenly divided by '1' and itself.
21 can be evenly divided by 1, 3, 7, and 21.
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Related Questions
Is 43 an 67 a pair of prime numbers?
Yes.
Is 67 and 89 a pair of prime numbers?
Yes it is.
Is 17 and 67 prime numbers?
Yes 17 and 67 are prime numbers.
How many prime number between 100 and 200?
There are 21 prime numbers between 100-200.
What are four prime numbers that equal 67?
The only prime number that equals 67 is 67.
Is 67 65 63 or 60 any prime numbers?
67 is prime.
Is 59 and 67 prime number?
59 and 67 are prime numbers.
How many prime numbers are there between 21 and 72?
there are 12 prime numbers between 21 and 72 23, 29, 31, 37, 41, 43, 47, 49, 53, 59, 61, 67
How many prime numbers are between 60-70?
Two of them and they are 61 and 67
What are the composite numbers of 67?
67 is a prime number.
Is 67 and 77 and 87 all prime numbers?
No, just 67.
Which is a prime numbers 67 81 97 100?
67
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