>I want to create a group of big number2, such as:
>

>123456789012345678901001
>123456789012345678901002
>123456789012345678901003
>

>
>I did
>

>nstart=123456789012345678901001
>cstart=alltrim(trans(nstart,'999999999999999999999999'))
>
>for i=1 to 10
>nstart=nstart+1
>cstart=cstart+'  '+alltrim(trans(nstart,'999999999999999999999999'))
>next
>

>
>but VFP can only add the first 16 digits
>thus I only get
>

>123456789012345678901001
>123456789012345600000000
>123456789012345600000000
>123456789012345600000000
>123456789012345600000000
>

In VFP9 Help (HELP SYSTEM CAPACITIES): Digits of precision in numeric computations: 16

"Visual FoxPro can handle numbers up to 9007199254740992 (2^53) in exact computations."

Are these large numbers actually for use in numeric calculations, or are they really just identifiers? If the latter you can use strings instead:

lcStub = "123456789012345678901"

FOR lnIx = 1 TO 10 STEP 1
  ?lcStub + PADL( LTRIM( STR( lnIx ) ), 3, "0" )

ENDFOR