I have a question regarding number formatting?

Xander1

Board Regular
Joined
Nov 28, 2006
Messages
52
When I enter a 16 digit credit card number, excel flips that last numer to a different number, usually a 0. Why, and how can I fix this?
 

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What is the last column in Excel?
Excel columns run from A to Z, AA to AZ, AAA to XFD. The last column is XFD.

barry houdini

MrExcel MVP
Joined
Mar 23, 2005
Messages
20,825
If you have a cell format as number it only recognises up to 15 significant figures. Format cell as text
 

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