You are using the wrong tool for breaking up fixed width fields. 

$s = '000000000000022102840002210284';
print unpack '(a10)*', $s;

0000000000 0002210284 0002210284

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If there is any doubt that the data will only contain digits, verify that with $s =~ m[^\d+$]; first.

Examine what is said, not who speaks.
Silence betokens consent.
Love the truth but pardon error.

In reply to Re: Regexp to extract groups of numbers by BrowserUk
in thread Regexp to extract groups of numbers by neilh

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