53, 11, 97, 79 are prime.
12, 14, 15, 16, and 18 are composite numbers 11, 13, 17, and 19 are prime numbers
The sum of the prime numbers 2, 5, and 11 is 18.
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
The composite numbers between 11 and 19 are: 12 14 15 16 18 The other numbers, 11, 13, 17, and 19, are all prime.
11 numbers 2, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18 * * * * * NO! 2 is a prime, not a composite!
The prime numbers from 1 to 18 are 2, 3, 5, 7, 11, 13, and 17.
2, 3, 5, 7, 11, 13, 17, 19 ARE prime numbers! 1, 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20 are NOT prime numbers!
The prime numbers between 1 and 18 are: 2 3 5 7 11 13 17.
2+5+11= 18.
2, 5 and 11
Why are what prime ? Certainly not the numbers in that list.Only 8 of those are prime numbers.
15