20071222, 14:38  #1 
Dec 2007
27_{10} Posts 
Number Abreviations
what do the abreviations 2000L and 2000M mean
i understand what M2000 and P2000 are are there any other abreviations like this that i should know 
20071222, 19:00  #3 
Dec 2007
11011_{2} Posts 
what would i put into google

20071222, 20:16  #4  
A Sunny Moo
Aug 2007
USA (GMT5)
3×2,083 Posts 
Quote:
Quick (okay, maybe not so quick) answer to the OP's question: They are abbreviations for thousand, million, billion, etc.; K, M, G, T, P, etc. are abbreviations for "kilo" "mega" "giga" "tera" and "peta", respectively, which are prefixes used in things like "gigabyte" (1 billion bytes, actually in the case of bytes it's a little more than a billion, but in all other cases "giga" means just plain old 1,000,000,000, and etc.). For example, your computer's processor clock speed is probably measured in gigahertzi.e. billions of hertz. (If you have an older processor it's probably measured in megahertz.) These prefixes have been sort of generalized for use in prime searchingfor example, when dealing with Mersenne, Riesel, and Proth numbers (2^n1, k*2^n1, and k*2^n+1 respectively), the "n" value is often referred to with one of the above abbreviationsa common example of this you might see would be "500k", referring to n=500,000; another common prefix for values of n is "M", so if you see 1M, it means n=1,000,000. Another example of these prefixes is sieving, where the p value (the sieving depth) is often referred to in terms of G (1 billion), T (1 trillion), and P (what comes after trillion?). A quick little reference: K = 1,000 M = 1,000,000 G = 1,000,000,000 T = 1,000,000,000,000 P = 1,000,000,000,000,000 Hope this helps! Last fiddled with by mdettweiler on 20071222 at 20:18 

20071222, 20:24  #5 
Dec 2007
3^{3} Posts 
i also asked what L means
i saw it on the cunningham tables first and then on other posts 
20071222, 20:28  #6  
Undefined
"The unspeakable one"
Jun 2006
My evil lair
5599_{10} Posts 
Actually the page I linked to doesn't have any strong language at all, it is very tame, but perhaps the URL is ... um ... fun.
Quote:


20071222, 20:32  #7 
Dec 2007
3^{3} Posts 
is it just 2000 then

20071222, 21:18  #8 
"Mark"
Feb 2003
Sydney
23D_{16} Posts 
The page raised a smile, but if the F word is not strong language, there's not much left that is.
Last fiddled with by markr on 20071222 at 21:20 
20071223, 00:59  #9 
"Mark"
Apr 2003
Between here and the
2^{2}·3·487 Posts 
Check out ChezLeyland. What you are looking for are called Aurifeuillean factorizations.

20071223, 01:04  #10 
May 2005
2×809 Posts 

20071223, 01:07  #11  
A Sunny Moo
Aug 2007
USA (GMT5)
14151_{8} Posts 
Quote:
As for 2000L: Sorry, I have no idea what L is supposed to mean. I don't think it's similar to K, M, G, T, P, E, etc. (unless it's the next thing after E, which I doubt). It might be something completely different. 

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