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Earn +20 ptsQ: Is 21 and 31 a prime number?
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Which of 21 31 51 and 91 is a prime number?
31 is a prime number.
Which is a prime number 91 51 31 21?
31
Which number is prime 91 51 31 21?
31
What number is a prime number 21 31 41?
31 and 41 are prime numbers because they have only two factors
What are prime number greater than 21?
There is an infinite number of prime numbers that are greater than 21. The next prime number after 21 is 23.
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