23 (Prime) + 29 (Also Prime) = 52
The prime numbers greater than 21 are 23, 29, 31, 37, 41, 43, 47, etc.
2 3 5 7 11 13 17 19.
2, 3, 5, 7, 11, 13, 17, 19
1, 11, 21, 31, 41. 1 is not a prime number.
23, 29, 31, 37, 41, 43, 47
They are: 21 22 24 25 26 27 and 28 because 23 and 29 are prime numbers
19
The even whole numbers greater than 21 and less than 28 are: 22, 24 and 26
How many numbers less than 700 are divisible by both 15 and 21?
1,3,5,7,9,11,13,15,17,19,21
Do you mean, "What is the prime factorization of 21?"