If the number are entered as text, anytime the values need to by used by a
function the VALUE function can be used to convert the text value to numeric
ones. However, you'll still be limited to 15 digits of precision
--
Kevin Backmann


"Bob I" wrote:

that is correct, there are 15 digits of precision in Excel.

Aaron Z wrote:

If I type in the following number into a field:
123,456,789,123,456,789
and hit enter, I get the following number in the field:
123,456,789,123,456,000

If I then take the second number, subtract 2 from it in another cell, and
then do an exact function on the 2nd and 3rd (now 2 less than the 2nd), I get
a "TRUE" result.

I'm using Excel 2003, service pack 2.