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	Mar 7, 2026 21:22	3,009	17,038,819	2,648,000	0	2,433,024
2	Mar 8, 2026 03:12	3,024	14,026,075	2,661,000	0	2,441,216
3	Mar 7, 2026 21:19	3,026	16,823,930	2,663,000	0	2,437,120
4	Mar 7, 2026 21:22	3,028	15,787,926	2,665,000	0	2,441,216
5	Mar 7, 2026 21:20	3,032	17,969,346	2,668,000	0	2,433,024
6	Mar 8, 2026 03:12	3,036	17,994,938	2,672,000	0	2,445,312
7	Mar 7, 2026 21:22	3,061	20,680,760	2,694,000	0	2,437,120
8	Mar 7, 2026 21:22	3,064	18,280,037	2,696,000	0	2,441,216
9	Mar 8, 2026 03:12	3,065	24,318,731	2,697,000	0	2,531,328
10	Mar 8, 2026 03:12	3,067	23,048,423	2,699,000	0	2,445,312
11	Mar 7, 2026 21:20	3,072	18,474,036	2,703,000	0	2,531,328
12	Mar 8, 2026 03:12	3,073	23,550,390	2,704,000	0	2,441,216
13	Mar 7, 2026 21:20	3,078	24,131,322	2,709,000	0	2,441,216
14	Mar 7, 2026 21:20	3,110	22,001,482	2,737,000	0	2,441,216
15	Mar 7, 2026 21:19	3,151	22,533,607	2,773,000	0	2,441,216
16	Mar 7, 2026 21:22	3,152	28,068,821	2,774,000	0	2,449,408
17	Mar 8, 2026 03:12	3,153	22,140,344	2,775,000	0	2,441,216
18	Mar 7, 2026 21:20	3,163	24,446,020	2,783,000	0	2,445,312
19	Mar 7, 2026 21:22	3,163	21,040,718	2,783,000	0	2,437,120
20	Mar 7, 2026 21:22	3,172	18,930,005	2,791,000	0	2,269,184
21	Mar 7, 2026 21:22	3,176	19,832,743	2,795,000	0	2,441,216
22	Mar 7, 2026 21:19	3,181	19,089,388	2,799,000	0	2,441,216
23	Mar 8, 2026 03:12	3,190	16,380,056	2,807,000	0	2,437,120
24	Mar 7, 2026 21:22	3,191	15,985,131	2,808,000	0	2,437,120
25	Mar 7, 2026 21:22	3,202	22,568,420	2,818,000	0	2,441,216
26	Mar 8, 2026 03:12	3,310	22,169,976	2,913,000	0	2,441,216
27	Mar 7, 2026 21:22	3,316	17,511,021	2,918,000	0	2,445,312
28	Mar 7, 2026 21:22	3,317	19,740,477	2,919,000	0	2,433,024
29	Mar 7, 2026 21:20	3,324	19,212,595	975,000	1,950,000	2,482,176
30	Mar 8, 2026 03:12	3,448	17,777,906	2,023,000	1,011,000	2,441,216
31	Mar 8, 2026 03:12	3,485	20,544,092	2,045,000	1,022,000	2,273,280
32	Mar 8, 2026 03:12	3,553	21,055,616	2,085,000	1,042,000	2,437,120
33	Mar 8, 2026 03:12	3,559	18,240,888	2,088,000	1,044,000	2,445,312
34	Mar 7, 2026 21:22	3,631	17,327,263	2,130,000	1,065,000	2,437,120
35	Mar 7, 2026 21:22	3,661	21,568,040	2,148,000	1,074,000	2,445,312
36	Mar 7, 2026 21:22	3,663	20,365,355	2,149,000	1,074,000	2,269,184
37	Mar 7, 2026 21:22	3,674	22,715,213	3,233,000	0	2,437,120
38	Mar 7, 2026 21:22	3,685	21,076,764	2,162,000	1,081,000	2,531,328
39	Mar 7, 2026 21:22	3,828	15,355,214	3,369,000	0	2,441,216

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