R users, I am having a problem with the modulus operator for large numbers as follows,
a <- 2 n <- 561 ## n is the first Carmichael number, so by Fermat's Little Theorem the below should equal zero. (a^(n-1) - 1) %% n [1] 2.193172e+152 ## Seems that R and Fermat disagree ## Also, 1000000000000000000 %% 11 [1] -32 This seems like a bug. Should I be avoiding integer math for large numbers? Thanks, Robert platform i686-pc-linux-gnu arch i686 os linux-gnu system i686, linux-gnu status major 2 minor 0.1 year 2004 month 11 day 15 language R ______________________________________________ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
