Five
The answer is 105 because 3,5, and 7 are all prime factors and when you multiply the numbers together it comes out to be 10
5 is a prime factor of 105,20 and 30
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 .
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
20 is a composite number
47 is the largest prime number between 20 and 50.
Any prime number is relatively prime to 7, such as 2, 3, 5, 11, 13, 17, 19, 23, 29, 31, 37, ... Because 7 is a prime number, any number that does not have 7 as a factor is relatively prime to 7, such as 4, 6, 8, 9, 10, 12, 15, 18, 20, 22, 24, 25, 26, 27, 30, ...
The largest prime under 20 is 19.
no. 20 is a prime number.