Excel only has 15 digit precision.

If you need more, you will require a different program.

Preface the number with a single quote(apostrophe) or pre-format the cells to
Text.


Gord Dibben MS Excel MVP


On Fri, 29 Sep 2006 17:19:02 -0700, trafficpower
wrote:

When I enter a number in a cell, like a serial number with 16 digits, it
always makes the last number a zero even when it isn't.

For instance I will type 23467923400998
but it will show 23467923400990