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 20, 2026 12:48	3,086	19,407,666	2,716,000	0	2,428,928
2	Feb 20, 2026 12:50	3,090	24,554,910	2,719,000	0	2,433,024
3	Feb 20, 2026 12:50	3,090	18,454,250	2,719,000	0	2,437,120
4	Feb 20, 2026 12:49	3,091	24,030,460	2,720,000	0	2,437,120
5	Feb 20, 2026 12:49	3,120	20,104,378	2,746,000	0	2,441,216
6	Feb 20, 2026 12:49	3,122	18,197,449	2,747,000	0	2,437,120
7	Feb 20, 2026 12:49	3,128	18,735,406	2,753,000	0	2,437,120
8	Feb 20, 2026 12:47	3,139	20,559,928	2,762,000	0	2,424,832
9	Feb 20, 2026 12:47	3,141	21,306,767	2,764,000	0	2,535,424
10	Feb 20, 2026 12:50	3,147	23,944,887	2,769,000	0	2,433,024
11	Feb 20, 2026 12:49	3,152	23,444,545	2,774,000	0	2,437,120
12	Feb 20, 2026 12:48	3,172	14,925,494	2,791,000	0	2,535,424
13	Feb 20, 2026 12:47	3,178	16,358,485	2,797,000	0	2,437,120
14	Feb 20, 2026 12:47	3,194	23,222,812	2,811,000	0	2,437,120
15	Feb 20, 2026 12:47	3,201	16,320,452	2,817,000	0	2,437,120
16	Feb 20, 2026 12:45	3,208	22,515,940	2,823,000	0	2,428,928
17	Feb 20, 2026 12:46	3,222	18,290,779	2,835,000	0	2,531,328
18	Feb 20, 2026 12:50	3,270	18,815,410	1,919,000	959,000	2,433,024
19	Feb 20, 2026 12:46	3,277	18,819,164	1,923,000	961,000	2,433,024
20	Feb 20, 2026 12:44	3,281	20,201,088	962,000	1,925,000	2,478,080
21	Feb 20, 2026 12:50	3,283	18,485,919	1,926,000	963,000	2,424,832
22	Feb 20, 2026 12:44	3,305	20,470,030	2,908,000	0	2,510,848
23	Feb 20, 2026 12:49	3,307	17,298,677	970,000	1,940,000	2,437,120
24	Feb 20, 2026 12:44	3,314	18,439,586	1,944,000	972,000	2,433,024
25	Feb 20, 2026 12:50	3,317	18,379,570	1,946,000	973,000	2,437,120
26	Feb 20, 2026 12:46	3,317	19,106,750	1,946,000	973,000	2,433,024
27	Feb 20, 2026 12:47	3,318	18,406,962	1,947,000	973,000	2,277,376
28	Feb 20, 2026 12:49	3,320	22,754,680	1,948,000	974,000	2,437,120
29	Feb 20, 2026 12:46	3,324	20,809,100	2,925,000	0	2,437,120
30	Feb 20, 2026 12:45	3,325	18,254,477	2,926,000	0	2,424,832
31	Feb 20, 2026 12:50	3,327	20,482,420	1,952,000	976,000	2,428,928
32	Feb 20, 2026 12:46	3,327	23,927,794	1,952,000	976,000	2,437,120
33	Feb 20, 2026 12:50	3,339	17,584,181	1,959,000	979,000	2,437,120
34	Feb 20, 2026 12:47	3,339	19,842,751	1,959,000	979,000	2,433,024
35	Feb 20, 2026 12:48	3,345	18,186,677	1,963,000	981,000	2,433,024
36	Feb 20, 2026 12:49	3,436	20,379,835	2,016,000	1,008,000	2,277,376
37	Feb 20, 2026 12:45	3,470	17,395,048	2,036,000	1,018,000	2,433,024
38	Feb 20, 2026 12:49	3,559	22,821,975	2,088,000	1,044,000	2,273,280
39	Feb 20, 2026 12:50	3,622	20,041,931	2,125,000	1,062,000	2,428,928
40	Feb 20, 2026 12:47	3,686	22,866,633	2,163,000	1,081,000	2,433,024
41	Feb 20, 2026 12:47	3,688	20,585,664	3,245,000	0	2,433,024
42	Feb 20, 2026 12:47	3,764	17,575,361	3,312,000	0	2,433,024
43	Feb 20, 2026 12:46	3,791	21,041,056	3,336,000	0	2,433,024
44	Feb 20, 2026 12:47	3,853	19,880,235	3,391,000	0	2,535,424
45	Feb 20, 2026 12:47	3,858	22,173,145	3,395,000	0	2,428,928

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