21 as all other are prime no. except 21 which is a multiple of 3 and 7
The GCF of 21, 23, and 29 is 1. SInce 23 and 29 are prime, their GCF has to be 1.
23 and 29.
19, 23, 13, and 29 are all prime numbers.
They are 11, 13, 15, 17, 19, 21, 23, 25, 27 and 29.
There are 2 primes between 21 and 29 inclusive: 23 & 29.
The prime numbers after ten are: 11 13 17 19 23 29
23/13
13 15 17 19 21 23 25 27 29 31
21: 3, 7 22: 2, 11 23: 23 24: 2, 3 25: 5 26: 2, 13 27: 3 28: 2, 7 29: 29 30: 2, 3, 5
23 and 29
23 and 29
They are all prime numbers except for 15 21 25 and 27 which are composite numbers