Is there an upper limit on .txt file size?

Question

As a Christmas gift I have written a small program in Java to calculate primes. My intention was to leave it on all night, calculating the next prime and writing it to a .txt fi

Answer 1

There's plenty of limits, though none of them are intrinsic to .txt files:

• Windows 9x Notepad won't open a file > 64KB.
• Windows NT/2k/etc's Notepad has no limit, but tends to choke and lock up on multi-megabyte files. You also need to remember most text editors are dumb and try to read the entire file into RAM.
• Lots of software is limited to 2GB or 4GB files depending on whether they use signed or unsigned ints - as someone already mentioned FAT32 is guilty of this.