Just asking

[seekeerz]

If you were asked to list the prime numbers in order, which number would you start with ??

[squarebear]

Number 1 obviously.

[eash]

The lowest?

[seekeerz]

thanks, squarebear, that's also what I would have said.
Watching a quiz show tonight, was amazed when that answer was ruled incorrect - think they need to check their sources

[ken48]

2 !!
1 is NOT a prime number as it has only one factor. prime numbers have just two factors, 1 and the number itself.

[squarebear]

1 is only divisible by itself and 1, so 1 is a prime number.

[seekeerz]

I thought that 3 was the next prime number

[sddsddean]

I must admit I would have said 1, but just put in 'prime number definition' into google and every site says the same as ken's answer, so looks like the correct answer is 2.

[Mamyalynne]

http://www.murderousmaths.co.uk/games/primcal. htm

[squarebear]

1,2,3,5,7,11 and so on.

[ken48]

1 used to be considered a prime, but the rules changed! See en.wikipedia.org/wiki/Prime_number

[seekeerz]

Sorry, squrebear, I have to take your stars away and give them to ken48 - have just done some checking, an it seems it starts with 2

[seekeerz]

wouldn't you know it - they're always moving the goalposts

thanks everyone

[poortony]

sure makes me feel old, all this changing, countries
change names even traffic lights change.

[mohill]

Hi seekeerz!
The set of prime numbers has always excluded the number 1.
If 1 were included then there would be NO prime numbers, because 1 is a factor of every whole number.
So any consideration of primes begins with the number 2.
Take care and have a happy Christmas.

regards
Brian