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From: Simon Wright <simon@pushface.org>
Newsgroups: comp.lang.ada
Subject: Re: Ada.Numerics.Big_Numbers.Big_Integer has a limit of 300 digits?
Date: Wed, 22 Dec 2021 20:34:20 +0000
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AdaMagica <christ-usch.grein@t-online.de> writes:

> There is a limit
> Bignum_Limit : constant := 200;
> in System.Generic_Bignums body, function Normalize, lines 1100ff.

This is the maximum length of a Digit_Vector, where

   subtype SD is Interfaces.Unsigned_32;
   --  Single length digit

   type Digit_Vector is array (Length range <>) of SD;
   --  Represent digits of a number (most significant digit first)

I think this should give a maximum value of ~10**2000.

I printed out sum'image'length; the last value before the exception was
1937.