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	1:20.1.2-0ubuntu1~24.04.2	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.
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	3.0.13-0ubuntu3.9	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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Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Feb 21, 2026 21:16	3,101	15,471,022	2,729,000	0	2,433,024
2	Feb 21, 2026 21:16	3,117	20,307,658	2,743,000	0	2,277,376
3	Feb 21, 2026 21:16	3,124	16,860,925	2,749,000	0	2,428,928
4	Feb 21, 2026 21:08	3,149	20,608,625	2,771,000	0	2,437,120
5	Feb 21, 2026 21:14	3,149	23,499,531	2,771,000	0	2,428,928
6	Feb 21, 2026 21:18	3,159	24,047,675	2,780,000	0	2,433,024
7	Feb 21, 2026 21:16	3,163	21,154,973	2,783,000	0	2,428,928
8	Feb 21, 2026 21:09	3,165	19,655,178	2,785,000	0	2,428,928
9	Feb 21, 2026 21:16	3,167	22,187,194	2,787,000	0	2,428,928
10	Feb 21, 2026 21:16	3,169	21,910,958	2,789,000	0	2,437,120
11	Feb 21, 2026 21:16	3,170	22,152,631	2,790,000	0	2,531,328
12	Feb 21, 2026 21:18	3,173	20,409,028	2,792,000	0	2,437,120
13	Feb 21, 2026 21:10	3,174	17,937,075	2,793,000	0	2,433,024
14	Feb 21, 2026 21:09	3,175	19,647,828	2,794,000	0	2,277,376
15	Feb 21, 2026 21:09	3,184	22,709,574	2,802,000	0	2,277,376
16	Feb 21, 2026 21:08	3,193	18,352,917	2,810,000	0	2,428,928
17	Feb 21, 2026 21:11	3,276	19,100,886	1,922,000	961,000	2,433,024
18	Feb 21, 2026 21:08	3,277	15,425,748	1,923,000	961,000	2,424,832
19	Feb 21, 2026 21:10	3,309	19,924,057	2,912,000	0	2,277,376
20	Feb 21, 2026 21:09	3,314	24,113,221	2,916,000	0	2,433,024
21	Feb 21, 2026 21:14	3,314	19,492,005	2,916,000	0	2,277,376
22	Feb 21, 2026 21:09	3,315	21,416,040	1,945,000	972,000	2,441,216
23	Feb 21, 2026 21:20	3,324	25,076,255	1,950,000	975,000	2,277,376
24	Feb 21, 2026 21:08	3,324	18,931,145	2,925,000	0	2,433,024
25	Feb 21, 2026 21:11	3,324	20,647,066	2,925,000	0	2,441,216
26	Feb 21, 2026 21:08	3,325	20,745,892	1,951,000	975,000	2,433,024
27	Feb 21, 2026 21:16	3,327	21,772,697	1,952,000	976,000	2,433,024
28	Feb 21, 2026 21:11	3,328	19,195,096	2,929,000	0	2,433,024
29	Feb 21, 2026 21:21	3,333	24,482,974	2,933,000	0	2,539,520
30	Feb 21, 2026 21:12	3,334	24,630,496	1,956,000	978,000	2,437,120
31	Feb 21, 2026 21:12	3,335	20,951,691	1,957,000	978,000	2,428,928
32	Feb 21, 2026 21:10	3,335	16,901,627	1,957,000	978,000	2,441,216
33	Feb 21, 2026 21:12	3,335	19,991,451	1,957,000	978,000	2,506,752
34	Feb 21, 2026 21:16	3,342	18,595,046	1,961,000	980,000	2,428,928
35	Feb 21, 2026 21:18	3,345	18,179,752	1,963,000	981,000	2,424,832
36	Feb 21, 2026 21:21	3,351	16,979,805	1,966,000	983,000	2,437,120
37	Feb 21, 2026 21:21	3,355	19,130,196	1,968,000	984,000	2,437,120
38	Feb 21, 2026 21:20	3,356	18,246,574	2,953,000	0	2,441,216
39	Feb 21, 2026 21:16	3,420	23,452,761	2,007,000	1,003,000	2,281,472
40	Feb 21, 2026 21:08	3,611	17,709,454	2,119,000	1,059,000	2,428,928
41	Feb 21, 2026 21:20	3,750	20,370,648	3,300,000	0	2,424,832
42	Feb 21, 2026 21:16	3,761	19,016,060	2,207,000	1,103,000	2,277,376
43	Feb 21, 2026 21:14	3,777	17,669,251	3,324,000	0	2,433,024
44	Feb 21, 2026 21:09	3,930	19,076,012	3,458,000	0	2,433,024
45	Feb 21, 2026 21:16	5,036	18,044,579	4,432,000	0	2,433,024

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