Even number bigger than two are never prime so cross them out, leaving
11,13,15,17,19
Any number ending in 5 is divisible by 5 and so can not be prime,
This leaves 11,13,17,19 which all could be prime and actually are.
23
11 13 15 17 19
11
11
11.
No because 137 is a prime number whose only factors are itself and one
What would be the next number in this series 15 12 13 10 11 8?
The only even prime number is 2. 12-10=2, 13-11=2, 14-12=2,...99-97=2.
11
The prime factor of 7 is 7. The prime factor of 8 is 2. The prime factor of 9 is 3. The prime factors of 10 are 2 and 5. The prime factor of 11 is 11.
Any prime number greater than 11.
No , because it is divisible by 11 (11 x 12)
11
No 1221 is not a prime number as it has other factors. It can be divided by the number 12 so is not prime.
The greatest common factor of 11 and 12 is the number 1.
12 over 10 as a mixed number = 11/5
All of them except for 11, 13, 17 and 19 which are prime numbers
no. 3 and 11 are prime numbers. 12 is not a prime number as it can be divided by other things apart from itself and one. these other numbers are 3, 4, 6 and 2.
2 3 5 7 11