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Earn +20 ptsQ: Which one is a prime number 19 21 or 23?
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Is 23 21 19 prime or composite?
19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.
What is the prime number of 16 27 13 19 21?
They are 13 and 19 which are prime numbers
What is the largest prime number less than 21?
19
What prime number comes after 19?
23 Prime numbers are odd numbers and 21=3x7
Is 21 seven a prime number?
21 is the product of two prime numbers, three and seven. A prime number is defined as a number divisible only by one or itself. So ... NO ... 21 is not a prime number.
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