The only two prime factors of 18 are: 2, 3
21
2 x 3 x 3 = 18
Three. 11, 13 and 17
There are only two and they are 3 and 2.
The sum of the prime numbers 2, 5, and 11 is 18.
The only two prime factors of 18 are: 2, 3
2, 3, and 13 are all prime numbers and their sum is equal to 18.
21
18 = 2 x 3 x 3
2 x 3 x 3 = 18
The sum of the five smallest prime numbers is 18.
Three. 11, 13 and 17
There are only two and they are 3 and 2.
The prime numbers (factors) of 18 are: 2 and 3
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
2 3 13