On Wed, Feb 09, 2011 at 07:39:55AM -0800, PtitBleu wrote: > > Thanks for all your answers. I didn't know this limit. > > I finally found another way to go around this problem: luckily the 4 first > figures are always the same for all these numbers. > I created a new column with as.numeric(substr(df$BigNumber,5,18)). > Numbers are now 14-figures long and it is now ok.
14 digits are OK. The exact limit is 2^53 as may be seen from the following diff(2^53 - 5:0) [1] 1 1 1 1 1 diff(2^53 + 0:5) [1] 0 2 2 0 0 Since 2^53 > 8999999999999999, even 16 digit integers may be used, if the first digit is at most 8. Petr Savicky. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
