It has to be text. A number can have only 15 decimal digits. Either
precede it with an apostrophe ('), or pre-format the cell (Format - Cells -
Number tab) as text.

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Earl Kiosterud
mvpearl omitthisword at verizon period net
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"muckali" wrote in message
...
I was just noticing that I can not enter more than 15 digits in a cell, the
16th always changes to zero. Why is this, and is there any way to fix
this?

All sugesstions are welcome, but I also want to keep it in the format of
"0000 0000 0000 0000" I've been doing this by making a custom format.

Thanks a lot!!!!