20 is a composite number
The first prime after 20 is 23.
A prime number can be less than 20, but it is not a requirement that the number has to be under 20 to be considered prime. Here is a list of all the prime numbers under 20: 2, 3, 5, 7, 11, 13, 17, and 19 .
I don’t
what number is not a prime factor
5 is the greatest prime factor of 20.
20 is not a prime number because 5 and 4 10 and 2 can also go into 20 not just 20 and 1
47 is the largest prime number between 20 and 50.
The largest prime under 20 is 19.
no. 20 is a prime number.
19 is prime.
If the number is < 2 then it is not a prime. If the number is == 2 then it is a prime. If the number is divisible by 2 then it is not a prime and so on.
The prime number less than 10 that, when added to either 10 or 20, results in a prime number is 3. When you add 10 to 3, you get 13, which is a prime number. Similarly, when you add 20 to 3, you get 23, which is also a prime number.