Any positive integer that is evenly divisible only by itself and one.
Prime numbers like 2, 3, 5 and 7.
Numbers that are not prime numbers are called composite numbers.
i think prime numbers
The Sieve of Erastosthenes shows prime numbers.
They are called prime numbers.
A set of numbers whose GCF is one are called co-prime or relatively prime
They're not. Prime numbers and square numbers are different things.
The numbers are relatively prime or co-prime.
That's called the prime factorization.
Prime numbers
One method for finding prime numbers is called the "Sieve of Eratosthenes" because it basically "sifts" through the numbers looking for numbers that are not not prime.
Two prime numbers which differ by 2 are called "twin primes".