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What else can I help you with?
Are 21 and 11 prime numbers?
11 is a prime number but 21 is not a prime number as it is divisible by 3.
Which is a prime number 16 21 19 18?
19 is prime.
Are 11 and 21 prime?
11 is prime; 21 is not. To see whenever a number is prime or not, think if a number can be multiplied by another number to get that number. Or just look at a Sieve of Eratosthenes, if you're not a "thinky" person. :)
Which number is prime 9 18 21 25?
None of them are prime numbers
Which one is a prime number 36 21 18 2?
2
Is 231 a prime number?
No! It is divisible by 21 and 11 (21x11=231)
What does 11 and 21 both go in to?
Since 11 is a prime number, the only shared positive integer factor of 11 and 21 is 1.
Is number 21 prime or composite?
number 21 is prime
Is the prime number 21 is a prime number?
21 is a composite number, not a prime, having prime factors 3x7.
What odd number between 11 and 21 is the product of two prime numbers?
13 is prime so it is not the number. 15 is the product of 3 and 5, two prime numbers, so it fits the conditions. 17 is prime so it is not the number. 19 is prime so it is not the number. 15 is the only odd number between 11 and 21 that fits the conditions. However, if 21 is included in the range, it also is the product of two prime numbers: 3 x 7.
Which numbers are prime 11 21 52 57 94 107?
11 is the only prime number. 21, 52, 57 and 94 are divisible by 3, 2, 3 and 2 respectively, and are therefore not prime numbers.
What are the prime factors for 18 and 21?
18 has prime factors 3 & 2 whereas 21 has prime factors 3 & 7.
