C++ with supports arbitrary-precision integers, just not within the standard library up till now. There exist libraries working with the C++ type system since at least 1988 (C++ was released in 1985).   For popular choices see Boost.Multiprecision, GMP and several crypto libraries bringing their own implementation: https://www.boost.org/doc/libs/latest/libs/multiprecision/doc/html/index.html https://gmplib.org https://cryptopp.com/docs/ref/class_integer.html https://botan.randombit.net/handbook/api_ref/bigint.html   -----Ursprüngliche Nachricht----- Von:amngis_21d38 via Std-Proposals <std-proposals_at_[hidden]> Gesendet:So 21.06.2026 11:07 Betreff:[std-proposals] Big integers An:std-proposals <std-proposals_at_[hidden]>; CC:amngis_21d38 <amngis_21d38_at_[hidden]>; So why does C++ still not support arbitrary-precision integers? -- Std-Proposals mailing list Std-Proposals_at_[hidden] https://lists.isocpp.org/mailman/listinfo.cgi/std-proposals