We're working on it: https://github.com/eisenwave/std-big-int

The problem is mainly that a stupendous amount of effort is required to
properly design, implement, and standardize such a feature, and previous
attempts have been abandoned.

On Sun, 21 Jun 2026 at 11:07, amngis_21d38 via Std-Proposals <
std-proposals_at_[hidden]> wrote:

> So why does C++ still not support arbitrary-precision integers?
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