HI, Default length for a Char variables in SAS is 8 Charecter's.but where as default length for a numeric variable is 8 Bytes,Not 8 digits.which means Apprx One Byte can Accommodates two or more digits.. As said by Fugue,we can store max 16 digits in a numeric variable .again number of digits we can store is vary from One OS to Other OS. Length in Bytes Significant Digits Retained Largest Integer Represented Exactly 3 3 8,192 4 6 2,097,152 5 8 536,870,912 6 11 137,438,953,472 7 13 35,184,372,088,832 8 15 9,007,199,254,740,992 Source :SASSupport.Com. Thanks, Sanjeev.K
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