numeric format & changed value

I am using ver.15 and created ID from PIDM (to convert ID to string).
The PIDM column is %10.0g. However, new ID column is %9.0g when I used 'gen ID = PIDM'.
I tried format %10.0g and %10.0f, but the ID has been changed and is different with PIDM. See below.
It should be simple copy but I can't explain or fix this issue. Would you advise me what I did wrong?
Thanks.


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Code:

* Example generated by -dataex-. To install: ssc install dataex
clear
input long PIDM
70056666
70065533
70075297
70153329
70197535
70222194
70228218
70235809
70290675
70293111
70296647
70310470
70313455
70373648
70404506
70413121
70420725
70422908
70424551
70427177
end

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Array