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A question prompted by a Radio Quiz;
Is the number one a Prime Number or not ?
It seems to fit the only definition I know - i.e. it is only divisible by itself and one ......
NitroNutter
26-04-2005, 05:48
I beleieve so, been a long time since I seen a list of primes as an exercise tho ;)
ScaredWebWarrior
26-04-2005, 07:41
A question prompted by a Radio Quiz;
Is the number one a Prime Number or not ?
It seems to fit the only definition I know - i.e. it is only divisible by itself and one ......
First about the definition: http://www.mazes.com/primes/defined.html
It is not a prime number, but...
The number 1 is a special case which is considered neither prime nor composite .... Although the number 1 used to be considered a prime...
see http://mathworld.wolfram.com/PrimeNumber.html
Also:
http://primes.utm.edu/notes/faq/one.html
What he said.
Prime numbers have two factors, themselves and 1.
As the number 1 only has one factor (it can't count twice) then it's not a prime.
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