I need help!

google-prime numbers-enter

here are the first twenty, hope that's enough. They are numbers which are only divisible by 1, themselves and all other prime numbers.

1
2
4
8
16
32
64
128

(I'm sure you can guess the pattern. You won't understand the relevance though until you get into calculus.)

Uh, no - absolutely not!

A Prime number greater than 1 is divisible only by 1 and itself. As you will see they are not the numbers as presented above: First 10,000 Primes.

SCoates has misled you.

Prime numbers are those natural numbers (1, 2, 3, ...) that are divisible only by 1 and themselves (not all other prime numbers). 1 is not a prime number. 2 is the only even prime number. The first ten primes are:
2, 3, 5 ,7, 11, 13, 17, 19, 23, 29
No pattern for the prime numbers has been discovered. You'd become famous instantly if you found one.

SCoates gave you the powers of 2 (which have an obvious pattern).

A good exercise you can do (helps with division and multiplication as well) is to find the prime numbers from 1 to 100. Simply write down all the numbers (1 2 3 ..... 100)

1 is not prime. Cross it out.
Start with 2 which is a prime number and circle it.
Next, go through all the rest of the numbers AFTER 2 and cross out any one that is divisible by 2 (this will be all even numbers)

Next, circle the next number on your list. This is 3, and also the next prime number. Once again cross out every number on your list that is divisible by three. Now, circle the next number that is not crossed out. This will be 5 (4 is divisible by 2).

Keep going and you will have all prime numbers between 1 and 100. (this does not take as long as it seems. after 2, you have eliminated half the numbers on the list.)

look for Eratosthenes Sieve. Eratosthenes was a greek that developed this number sieve (filter) to identify prime numbers. A java script sieve of Eratosthenes can be found at erasosiv

Rap

why isnt 1 prime number if it is only divisable by 1, itself?

By Definition

Primes are integers greater than 1 and only divisible by themselves (& 1).

It all comes from the fundamental definition of arithmetic that says that all integers greater than 1 are prime or are the product of prime numbers.

1 is a special integer because of its multiplicative identity, i.e. 1X1=1.

Rap