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Date: Sat, 9 Jan 2021 07:16:57 -0800 (PST)
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Subject: From_string(Arg : String) return Big_Integer
From: soren rundgren <soren.m.rundgren@gmail.com>
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Xref: reader02.eternal-september.org comp.lang.ada:61078
List-Id: <comp.lang.ada>

This piece of code compile with no warnings;
   S: constant Big_Integer := 4547337172376300111955330758342147474062293202868155909489;
   T: constant Big_Integer := 4547337172376300111955330758342147474062293202868155909393;

However the runtime message is
raised CONSTRAINT_ERROR : bad input for 'Value: "4547337172376300111955330758342147474062293202868155909489"
[2021-01-09 15:58:43] process exited with status 1, elapsed time: 00.21s

Any ideas why?