Prime numbers

Last two days I been going to work shops for prime numbers. The hard parts are learning all the steps in prime number. The steps are:

• timetable
• 2 factors in a prime number 
• divisible by itself
• no remainders
• 24 number are only even numbers.

The easy part was figuring the prime numbers and the composite numbers because after learning all the steps I kinda got it. I can follow the step and make sure that the correct numbers are prime numbers and not composite. I need to work on my 6,7,8 timetables.