[Cz-mathematics] FW: Sieve of Eratosthenes

[Greg Woodhouse]

If I recall correctly, when I wrote this 4 was crossed out, but it wasn't
clear that it was because the strike-through was superimposed on the
crossbar of the numeral 4. It looks like someone must have found a way to
fix this.

On 11/7/07, Larry Sanger <sanger at citizendium.org> wrote:
>
>
>  -----Original Message-----
> *From:*  ...
> *Sent:* Wednesday, November 07, 2007 12:12 PM
> *To:* sanger at citizendium.org
> *Subject:* Sieve of Eratosthenes
>
> In the article on prime factors the sieve of Eratosthenes seems to have an
> error:
>
> The first number (2) is prime, so we mark it, and cross out all of its
> multiples: *2*, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18,
> 19, 20 The number 4 is also a multiple of 2, isn't it. But it has not been
> struck out. Is this an error or is it ok? Regards Smita
>
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