factors of 21: 3, 7 prime factors of 21: 3, 7
It is: 3*7 = 21
No, 21 and 23 are not twin prime numbers. Twin primes are pairs of prime numbers that differ by 2, such as 3 and 5, or 11 and 13.
They are: 3 and 7
It is 3 time 7 = 21
there are 3 prime numbers in between 21 and 33... they are 23,29, 31.
The prime numbers between 2 and 21 are: 2, 3, 5, 7, 11, 13, 17 and 19
7 and 3 are prime numbers but 21 is a composite nuber
factors of 21: 3, 7 prime factors of 21: 3, 7
The prime factors of 21 are 3 x 7.
17 is a prime number, but 21 is not (21 = 3 * 7).
There are 3 prime numbers from 21 to 35:23, 29 and 31
11 is a prime number but 21 is not a prime number as it is divisible by 3.
It is: 3*7 = 21
3 and 7 are prime numbers whose product is 21.
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.
3 x 7 = 21