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.

Back to listFeb 15, 2026 20:41

zielaj

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Challenge History

Date	Challenger	Cost	Type	Status
May 17, 2026 05:19	M-Rochat	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	May 17, 2026 05:19	0	8,270,935	1,104,000	0	2,113,536	expected "6442459076 ", got "2305422362 "
2	May 17, 2026 05:19	0	9,139,116	1,004,000	0	2,113,536	expected "6442459076 ", got "2305422362 "
3	May 17, 2026 05:19	0	10,049,646	1,020,000	0	2,113,536	expected "6442459076 ", got "2305422362 "
4	Feb 15, 2026 20:42	3,299	18,505,860	2,903,000	0	2,428,928
5	Feb 15, 2026 20:42	3,311	16,307,413	1,943,000	971,000	2,416,640
6	Feb 15, 2026 20:40	3,317	23,681,600	1,946,000	973,000	2,412,544
7	Feb 15, 2026 20:40	3,318	19,007,813	2,920,000	0	2,420,736
8	Feb 15, 2026 20:42	3,320	19,701,532	1,948,000	974,000	2,416,640
9	Feb 15, 2026 20:40	3,324	19,647,999	1,950,000	975,000	2,428,928
10	Feb 15, 2026 20:44	3,324	20,189,712	2,925,000	0	2,510,848
11	Feb 15, 2026 20:44	3,325	16,486,857	1,951,000	975,000	2,510,848
12	Feb 15, 2026 20:42	3,325	17,595,752	1,951,000	975,000	2,428,928
13	Feb 15, 2026 20:42	3,327	17,425,644	1,952,000	976,000	2,277,376
14	Feb 15, 2026 20:42	3,331	16,186,147	1,954,000	977,000	2,277,376
15	Feb 15, 2026 20:40	3,331	16,066,680	1,954,000	977,000	2,412,544
16	Feb 15, 2026 20:42	3,331	17,942,575	1,954,000	977,000	2,420,736
17	Feb 15, 2026 20:40	3,332	21,599,952	2,932,000	0	2,510,848
18	Feb 15, 2026 20:44	3,336	17,480,509	2,936,000	0	2,420,736
19	Feb 15, 2026 20:40	3,338	22,124,029	1,958,000	979,000	2,424,832
20	Feb 15, 2026 20:40	3,341	19,089,784	1,960,000	980,000	2,531,328
21	Feb 15, 2026 20:44	3,344	16,989,694	1,962,000	981,000	2,424,832
22	Feb 15, 2026 20:41	3,344	20,905,251	2,943,000	0	2,420,736
23	Feb 15, 2026 20:44	3,349	15,778,701	1,965,000	982,000	2,510,848
24	Feb 15, 2026 20:44	3,351	21,673,778	2,949,000	0	2,420,736
25	Feb 15, 2026 20:41	3,358	19,816,435	1,970,000	985,000	2,277,376
26	Feb 15, 2026 20:40	3,410	19,905,036	2,001,000	1,000,000	2,416,640
27	Feb 15, 2026 20:42	3,434	24,296,500	2,015,000	1,007,000	2,420,736
28	Feb 15, 2026 20:40	3,450	18,696,972	2,024,000	1,012,000	2,424,832
29	Feb 15, 2026 20:41	3,492	23,435,500	1,024,000	2,049,000	2,424,832
30	Feb 15, 2026 20:42	4,166	21,652,649	3,666,000	0	2,277,376

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