Suppressing scientific notation in R

especially at pos = 150,000,000

R automatically determines which number format it should display numbers in: it can be in an integer form or in scientific notation. For example, depending on circumstances, the value of 150,000,000 may sometimes be displayed as 1.5e+08, to go unnoticed. In those cases, you may have a problem, especially when you write the data into text files for further processing by other programs. You may eliminate this problem by changing R’s options:

options(scipen=999)

Keep in mind that the default value for scipen is zero. Therefore if you ever want to return back, set it to the original value.

source: http://stackoverflow.com/questions/5352099/how-to-disable-scientific-notation-in-r