The prime numbers (or prime integer, often basically called a "prime" for short) is a +ve integer p>1 that has no positive integer divisors other than 1 & p itself. A prime number p is a positive integer consist exactly one +ve divisor other than 1.)
For example, the only divisors of 13 are 1 & 13, making 13 a prime number, while the number 24 has divisors 1, 2, 3, 4, 6, 8, 12, & 24 (corresponding to the factorization 24=2^3·3), making 24 not a prime number. Other than 1 any +ve integer which are not prime are called composite numbers.
Prime numbers are the numbers that cannot be factored or, more exactly, are numbers n whose divisors are trivial & given by exactly 1 & n.
The number 1 is a special case which is thought about neither prime nor composite. Although the number 1 was thought about a prime , it requires special treatment in so plenty of definitions & applications involving primes greater than or equal to 2 that it is usually placed in to a class of its own and the list prime numbers.
A nice reason not to call 1 a prime number is that if 1 were prime, then the statement of the essential theorem of arithmetic would must be modified since "in exactly one way" would be false because any n=n·1. In other words, distinctive factorization in to a product of primes would fail if the primes included 1 need Math Problems Help.?
Who states "Why is the number 1 made an exception? This is an issue that schoolboys often argue about, but since it is a query of definition, it is not arguable."
For example, the only divisors of 13 are 1 & 13, making 13 a prime number, while the number 24 has divisors 1, 2, 3, 4, 6, 8, 12, & 24 (corresponding to the factorization 24=2^3·3), making 24 not a prime number. Other than 1 any +ve integer which are not prime are called composite numbers.
Prime numbers are the numbers that cannot be factored or, more exactly, are numbers n whose divisors are trivial & given by exactly 1 & n.
The number 1 is a special case which is thought about neither prime nor composite. Although the number 1 was thought about a prime , it requires special treatment in so plenty of definitions & applications involving primes greater than or equal to 2 that it is usually placed in to a class of its own and the list prime numbers.
A nice reason not to call 1 a prime number is that if 1 were prime, then the statement of the essential theorem of arithmetic would must be modified since "in exactly one way" would be false because any n=n·1. In other words, distinctive factorization in to a product of primes would fail if the primes included 1 need Math Problems Help.?
Who states "Why is the number 1 made an exception? This is an issue that schoolboys often argue about, but since it is a query of definition, it is not arguable."