Sum of prime numbers

Compute the sum of all prime numbers in a stream of binary integers as fast as possible.

Input: 1 000 000 uint32 values in little-endian binary on STDIN (4 bytes each).

Output: The uint64 sum of all values that are prime, printed as a decimal string.

Restrictions:30s256Mb 1 Score Packages

Feel free to create an issue if you need an extra library from the standard Ubuntu repository.

Name	Version	Description
libc6-dev	2.39-0ubuntu8.7	GNU C Library: Development Libraries and Header Files Contains the symlinks, headers, and object files needed to compile and link programs which use the standard C library.
libclang-common-14-dev	1:14.0.6-19build4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-15-dev	1:15.0.7-14build3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-16-dev	1:16.0.6-23ubuntu4	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-17-dev	1:17.0.6-9ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-18-dev	1:18.1.3-1ubuntu1	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-19-dev	1:19.1.1-1ubuntu1~24.04.2	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libclang-common-20-dev	1:20.1.2-0ubuntu1~24.04.3	Clang library - Common development package Clang project is a C, C++, Objective C and Objective C++ front-end based on the LLVM compiler. Its goal is to offer a replacement to the GNU Compiler Collection (GCC). . Clang implements all of the ISO C++ 1998, 11, 14 and 17 standards and also provides most of the support of C++20. . This package contains the Clang generic headers.
libcrypt-dev	1:4.4.36-4build1	libcrypt development files This package contains the files needed for developing applications that use libcrypt.
libgcc-10-dev	10.5.0-4ubuntu2.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-11-dev	11.5.0-1ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-12-dev	12.4.0-2ubuntu1~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-13-dev	13.3.0-6ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libgcc-14-dev	14.2.0-4ubuntu2~24.04.1	GCC support library (development files) This package contains the headers and static library files necessary for building C programs which use libgcc, libgomp, libquadmath, libssp or libitm.
libobjc-13-dev	13.3.0-6ubuntu2~24.04.1	Runtime library for GNU Objective-C applications (development files) This package contains the headers and static library files needed to build GNU ObjC applications.
libssl-dev	3.0.13-0ubuntu3.11	Secure Sockets Layer toolkit - development files This package is part of the OpenSSL project's implementation of the SSL and TLS cryptographic protocols for secure communication over the Internet. . It contains development libraries, header files, and manpages for libssl and libcrypto.
libstdc++-10-dev	10.5.0-4ubuntu2.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-11-dev	11.5.0-1ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-12-dev	12.4.0-2ubuntu1~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-13-dev	13.3.0-6ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libstdc++-14-dev	14.2.0-4ubuntu2~24.04.1	GNU Standard C++ Library v3 (development files) This package contains the headers and static library files necessary for building C++ programs which use libstdc++. . libstdc++-v3 is a complete rewrite from the previous libstdc++-v2, which was included up to g++-2.95. The first version of libstdc++-v3 appeared in g++-3.0.
libtbb-dev	2021.11.0-2ubuntu2	parallelism library for C++ - development files TBB is a library that helps you leverage multi-core processor performance without having to be a threading expert. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanism for performance and scalability. . (Note: if you are a user of the i386 architecture, i.e., 32-bit Intel or compatible hardware, this package only supports Pentium4-compatible and higher processors.) . This package includes the TBB development files.

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Challenge History

Date	Challenger	Cost	Type	Status
May 17, 2026 05:26	M-Rochat	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	May 17, 2026 05:26	0	8,570,928	1,192,000	0	2,117,632	expected "6442459076 ", got " "	stderr
2	May 17, 2026 05:26	0	10,226,489	1,200,000	0	2,117,632	expected "6442459076 ", got " "	stderr
3	May 17, 2026 05:26	0	11,345,362	1,196,000	0	2,117,632	expected "6442459076 ", got " "	stderr
4	Feb 6, 2026 06:08	3,372	17,399,943	989,000	1,978,000	2,494,464
5	Feb 6, 2026 16:47	3,383	23,285,556	992,000	1,985,000	2,494,464
6	Feb 6, 2026 06:08	3,392	17,683,405	995,000	1,990,000	2,494,464
7	Feb 6, 2026 16:47	3,393	19,978,130	995,000	1,991,000	2,498,560
8	Feb 6, 2026 06:29	3,397	21,747,829	996,000	1,993,000	2,277,376
9	Feb 6, 2026 06:29	3,409	17,922,748	1,000,000	2,000,000	2,494,464
10	Feb 6, 2026 06:29	3,416	18,619,655	1,002,000	2,004,000	2,277,376
11	Feb 6, 2026 06:08	3,417	19,823,953	1,002,000	2,005,000	2,498,560
12	Feb 6, 2026 16:47	3,424	20,050,564	1,004,000	2,009,000	2,277,376
13	Feb 6, 2026 06:29	3,424	17,834,637	1,004,000	2,009,000	2,494,464
14	Feb 6, 2026 06:08	3,430	18,517,105	1,006,000	2,012,000	2,277,376
15	Feb 6, 2026 06:07	3,431	24,591,801	1,006,000	2,013,000	2,277,376
16	Feb 6, 2026 06:29	3,434	22,013,969	1,007,000	2,015,000	2,498,560
17	Feb 6, 2026 06:07	3,434	23,696,396	1,007,000	2,015,000	2,494,464
18	Feb 6, 2026 06:08	3,434	23,484,918	1,007,000	2,015,000	2,277,376
19	Feb 6, 2026 06:29	3,436	22,972,075	1,008,000	2,016,000	2,498,560
20	Feb 6, 2026 06:08	3,441	22,170,705	1,009,000	2,019,000	2,494,464
21	Feb 6, 2026 06:07	3,441	20,635,031	1,009,000	2,019,000	2,494,464
22	Feb 6, 2026 16:47	3,441	21,171,982	1,009,000	2,019,000	2,498,560
23	Feb 6, 2026 06:08	3,447	19,165,881	1,011,000	2,022,000	2,498,560
24	Feb 6, 2026 16:47	3,451	19,966,047	1,012,000	2,025,000	2,277,376
25	Feb 6, 2026 16:47	3,455	21,377,397	1,013,000	2,027,000	2,502,656
26	Feb 6, 2026 06:29	3,455	17,636,792	1,013,000	2,027,000	2,498,560
27	Feb 6, 2026 06:29	3,458	19,565,730	1,014,000	2,029,000	2,277,376
28	Feb 6, 2026 06:08	3,460	17,397,770	1,015,000	2,030,000	2,535,424
29	Feb 6, 2026 06:29	3,464	17,375,168	1,016,000	2,032,000	2,502,656
30	Feb 6, 2026 16:47	3,465	22,684,040	1,016,000	2,033,000	2,498,560
31	Feb 6, 2026 06:08	3,467	17,497,770	1,017,000	2,034,000	2,498,560
32	Feb 6, 2026 16:47	3,470	23,465,629	1,018,000	2,036,000	2,494,464
33	Feb 6, 2026 06:29	3,489	24,859,598	1,023,000	2,047,000	2,494,464
34	Feb 6, 2026 06:29	3,631	22,287,690	1,065,000	2,130,000	2,535,424
35	Feb 6, 2026 16:47	3,644	21,090,824	1,069,000	2,138,000	2,277,376
36	Feb 6, 2026 06:29	3,661	21,234,254	1,074,000	2,148,000	2,277,376

Model	Intel(R) Xeon(R) CPU E3-1271 v3 @ 3.60GHz
Cores	1