# Prime Numbers

Hi,

I'm new to programming and am trying to write a couple programs but can't figure it out. The first one is a program to generate all the Prime Twin numbers less than 2000. The second one is a program for Goldbach's conjecture for even numbers to 200. Any help would be appreciated. Thanks

## Comments

• : Hi,
:
: I'm new to programming and am trying to write a couple programs but can't figure it out. The first one is a program to generate all the Prime Twin numbers less than 2000. The second one is a program for Goldbach's conjecture for even numbers to 200. Any help would be appreciated. Thanks
:
To calculate twin primes smaller than 2000 you nead to have a number x. The initial value of the number x is 2000. Then you need to decreas x to the number 3 (3 is the last twin pair). You check every number x between 3 and 2000 if it is a prime. You do that by mod-ing every number between x and 1, checking if all return the value 0 (if they do, then it is a prime). When the program finds the second prime you need to check if they are apart by 2. If they are a twin number is found.
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