1 is a prime number.
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Voting Style:  Open  Point System:  7 Point  
Started:  8/5/2016  Category:  Miscellaneous  
Updated:  2 years ago  Status:  Debating Period  
Viewed:  527 times  Debate No:  94451 
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A friend and I had a lengthy debate about whether or not 1 was a prime number. My friend defined a prime number as a whole number that cannot be divided by another whole number and result in a whole number.
I then argued that 7 wasn't a prime number because it could be divided by 7 and result in a whole number. Then, he argued divided by another whole number other than itself or 1 and result in a whole number. Anyways we reached a stalemate. I said 5,3,,2,1, 1, 2, 3 ,5 , and 7 were prime numbers. He said 5, 3, 2, ,1, and 1 were not prime numbers, but 2 ,3, 5, and 7 were. So who was right, is one a prime number? I say it is. Since if you divide one by 3 you get 1/3 which is not a whole number.
One is not a prime number. A prime number is a natural number (positive integers (whole numbers)) greater than 1 that has no positive divisors other than 1 and itself. By this definition, negatives can not be prime. Some examples are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61, 67, 71, 73, 79, 83, 89, 97, 101, 103, 107, and 109. If you still aren't completely sure, go to with website. https://primes.utm.edu... 

bah, your right by definition 1 isn't a prime number. Seem arbitrary that one would be left out. I mean two is a prime number and its right next to one. There seems no good reason that one isn't a prime number. Also, don't understand why negative numbers can't be prime. Again, seems arbitrary.
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religious non sense
I would otherwise take this debate, as I take anything math related.
Simply put, one is not a prime number, since the definition of "prime number" is any integer that is greater than one, whose only positive integer divisors are itself and 1. So, by definition, 1 is not prime.
It seems that you're both right/both wrong as one is apparently neither prime nor composite.