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What prime number is a factor of 12 and 21?
3
What number is a prime factor of both 12 and 21?
'3' 3 x 4 = 12 3 x 7 = 21 NB '7' is also a prime number.
Is number 21 prime or composite?
number 21 is prime
What numbers has the greatest number of prime factors 12 15 21 25?
12 (2x2x3)
Is the prime number 21 is a prime number?
21 is a composite number, not a prime, having prime factors 3x7.
Which pair of number is relatively prime 10 and 21 12 and 54 15 and 27 21 and 39?
10 and 21
Are 21 and 11 prime numbers?
11 is a prime number but 21 is not a prime number as it is divisible by 3.
Is 21 a prime number?
A prime number is any integer evenly divisible by only itself, and the number 1. Since 21 is divisible by 3 and 7, it is a composite number, not a prime number.No, 21 is not a prime number.21 is divisible by 1, 3, 7, & 21No. 21=3*7
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.
Is 21 and 31 a prime number?
21 is composite number that is a multiple of 3. 31 is a prime number.
What prime number can be divided by 12?
There is no such prime number. If it can be divided by 12 then it is not prime.
What is the prime number after 12?
13 is the prime number after 12.
