(no subject)

Date: 2008-06-23 08:57 am (UTC)
From: [identity profile] saraphale.livejournal.com
Seems to have been fixed now. Ah well.

Edit: No, wait, there are two mentions of the first program, to work out a factor, and I read the wrong one.
Edited Date: 2008-06-23 08:57 am (UTC)

(no subject)

Date: 2008-06-23 09:31 am (UTC)
From: [identity profile] new-brunette.livejournal.com
They're tricky things to find, these factors of prime numbers. That's why you need a computer.

(no subject)

Date: 2008-06-23 12:40 pm (UTC)
From: [identity profile] damerell.livejournal.com
The article contains (now) an explanation of why they really do mean factoring primes.

(no subject)

Date: 2008-06-23 12:56 pm (UTC)
From: [identity profile] new-brunette.livejournal.com
Yep, I saw.

(no subject)

Date: 2008-06-23 01:26 pm (UTC)
ext_8103: (Default)
From: [identity profile] ewx.livejournal.com
Well, sort of. The program really was a program to factor arbitrary (representable) integers, and the fact that they fed it a prime first doesn't alter that.

(no subject)

Date: 2008-06-23 04:23 pm (UTC)
pm215: (Default)
From: [personal profile] pm215
Does also contain a quote to the effect that the highest factor of a prime is one, though...

(no subject)

Date: 2008-06-23 10:01 am (UTC)
From: [identity profile] geekette8.livejournal.com
Lots of people do this. If you google (with quotes) "factoring large primes" you'll see it all over the place. Drives me nutty.

(no subject)

Date: 2008-06-23 11:09 am (UTC)
ext_8103: (Default)
From: [identity profile] ewx.livejournal.com
I have this great tool for factoring large primes, just send me £1,000,000 and I'll let you have a copy...

(no subject)

Date: 2008-06-23 11:03 pm (UTC)
From: [identity profile] cartesiandaemon.livejournal.com
Does it successfully reject invalid inputs, or produce an undefined[1] result? :)

[1] I say "undefined", but I think I know what it's going to be :)

(Yes, the phrase "factorising large primes" really bugs me too -- even more so because I actually recognise in myself a tendency to say it, so although wrong, it must have _some_ resonance with what it ought to mean.)

(no subject)

Date: 2008-06-24 08:41 am (UTC)
ext_8103: (Default)
From: [identity profile] ewx.livejournal.com

Too many zeroes in the price for error checking l-)

(...actually I'd quite happily spend a few weeks bashing in primality testing algorithms if there was a certain million in it. But there isn't l-)

(no subject)

Date: 2008-06-23 10:01 am (UTC)
From: [identity profile] hotbadgerdeluxe.livejournal.com
“The first program was written by the late Tom Kilburn to work out the highest factor of a prime number”

Easy program to write, then... assuming that the user only inputs prime numbers... now I see the problem...

(no subject)

Date: 2008-06-23 12:37 pm (UTC)
From: [identity profile] sbp.livejournal.com
I saw a demostration of Baby a while back. They made a (simple) picture of a train move across the CRT.

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