Those, or any pair of numbers larger than those (with a difference of 1) show up as subtracting to a result of zero.
Go larger still, and you can sneak in a difference of 2 without it noticing (don't know where the limit of that one is, but http://www.google.com/search?hl=en&q=999999999999999-999999999999997 works)
Another 2 9s on the beginning and you can get a gap of 295 in before it realises that there's a difference
http://www.google.com/search?hl=en&q=99999999999999999-99999999999999704
and even when it does notice, it gets it wrong http://www.google.com/search?hl=en&q=99999999999999999-99999999999999703
Good gosh.... First thing I thought when I got in here - SPAM
Sorry, didn't immediately see who started the topic... them links got me
hahahaha Google is broken!
I gain some small satisfaction from that for some reason
No idea why, but when I first saw it I thought it had something to do with the LHC!!
hahahahah
Let's hope they aren't relying on Google Calculator!
Well, they're relying on Dell, so it wouldn't surprise me
*applies for her doomsday science degree*
Courtesy of the End Of The World University:

GAAAAAH!!!
WHOA!
Christmas has come early!!![]()
How cool is that Morgan!
LOVE IT!!![]()
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You deserve it!
That is sooo excellent. Taking screenshot so that I'll have it forever![]()
Why don't u just save the image dek?? ![]()
Ummm.... cos my brain has slowed down
hehehe
Again, THANK YOU!
That has just made my day
Hey, np! ![]()
Hey SK, I have to admit, I didn't click on these links this morning, but only then - and WOW!! how cool is it! - kept me busy for a while playing around with it ![]()
who figured this out?
(that the calculator was broken....)
I found it via Stumbleupon...
okay
Sending ...