18 and 6.
5 and 41 are prime numbers but 18 is a composite number
There are two pairs of prime numbers that express 18 as the sum of two prime numbers: 7 + 11 = 18 and 5 + 13 = 18.
5+6+7=18
The prime numbers (factors) of 18 are: 2 and 3
1,2,3,6,9 & 18
18
1,2,3,6,9 & 18 !
9 and 18. 9+18=27. 18 divided by 2=9.
You can multiply the number 18 by different numbers that are relatively prime, for example by different prime numbers.
The least common multiple of the numbers 8 and 18 is 72.
The sum of the prime numbers 2, 5, and 11 is 18.