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.

Back to listMar 20, 2026 18:09

olliecrowScore: 18,689Success

Source Code

Source code access is restricted. Log in to request access.

Challenge History

No challenges yet.

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory
1	Mar 20, 2026 17:21	18,422	38,458,990	14,185,000	2,026,000	2,486,272
2	Mar 20, 2026 17:04	18,428	44,292,047	15,204,000	1,013,000	2,502,656
3	Mar 20, 2026 17:17	18,432	37,670,176	14,193,000	2,027,000	2,412,544
4	Mar 20, 2026 17:17	18,439	40,524,466	15,212,000	1,014,000	2,535,424
5	Mar 20, 2026 17:01	18,441	35,012,670	14,200,000	2,028,000	2,494,464
6	Mar 20, 2026 17:01	18,457	37,238,026	14,212,000	2,030,000	2,551,808
7	Mar 20, 2026 17:21	18,458	38,764,936	15,228,000	1,015,000	2,502,656
8	Mar 20, 2026 17:21	18,464	38,462,136	15,233,000	1,015,000	2,412,544
9	Mar 22, 2026 20:45	18,467	35,506,634	14,220,000	2,031,000	2,482,176
10	Mar 20, 2026 17:04	18,470	33,178,162	14,223,000	2,031,000	2,514,944
11	Mar 20, 2026 17:21	18,485	43,461,087	13,217,000	3,050,000	2,490,368
12	Mar 20, 2026 17:22	18,491	40,254,207	14,238,000	2,034,000	2,330,624
13	Mar 20, 2026 17:22	18,497	37,295,063	14,243,000	2,034,000	2,400,256
14	Mar 20, 2026 17:21	18,530	31,769,123	13,249,000	3,057,000	2,437,120
15	Mar 22, 2026 20:45	18,540	43,832,345	15,296,000	1,019,000	2,461,696
16	Mar 20, 2026 17:05	18,566	31,534,034	14,296,000	2,042,000	2,543,616
17	Mar 22, 2026 20:45	18,569	42,914,302	14,299,000	2,042,000	2,482,176
18	Mar 20, 2026 17:04	18,611	41,640,056	14,331,000	2,047,000	2,494,464
19	Mar 20, 2026 17:05	18,625	40,487,099	15,366,000	1,024,000	2,367,488
20	Mar 20, 2026 17:01	18,645	32,176,397	13,332,000	3,076,000	2,535,424
21	Mar 20, 2026 17:05	18,659	36,274,080	14,368,000	2,052,000	2,539,520
22	Mar 20, 2026 17:26	18,665	33,685,047	15,399,000	1,026,000	2,424,832
23	Mar 20, 2026 17:17	18,689	36,707,488	16,446,000	0	2,555,904
24	Mar 20, 2026 17:20	18,724	35,151,016	15,448,000	1,029,000	2,514,944
25	Mar 20, 2026 17:20	18,724	33,424,253	15,448,000	1,029,000	2,428,928
26	Mar 20, 2026 17:28	18,734	40,443,139	16,486,000	0	2,461,696
27	Mar 20, 2026 17:28	18,759	39,050,799	16,508,000	0	2,506,752
28	Mar 20, 2026 17:26	18,797	43,618,956	16,541,000	0	2,408,448
29	Mar 20, 2026 17:21	18,845	42,237,059	14,511,000	2,073,000	2,473,984
30	Mar 20, 2026 17:26	18,849	34,606,917	14,514,000	2,073,000	2,375,680
31	Mar 20, 2026 17:20	18,874	35,080,074	14,533,000	2,076,000	2,428,928
32	Mar 20, 2026 17:22	18,889	37,417,560	14,545,000	2,077,000	2,441,216
33	Mar 20, 2026 17:28	19,111	45,681,027	14,716,000	2,102,000	2,314,240
34	Mar 20, 2026 17:30	19,316	36,988,981	13,999,000	2,999,000	2,383,872
35	Mar 20, 2026 17:30	19,352	34,090,460	14,025,000	3,005,000	2,441,216
36	Mar 20, 2026 17:30	19,501	45,721,615	15,142,000	2,019,000	2,330,624
37	Mar 20, 2026 18:48	19,789	43,660,364	17,414,000	0	2,482,176
38	Mar 20, 2026 18:49	19,805	36,557,879	17,428,000	0	2,502,656
39	Mar 20, 2026 18:49	19,845	35,194,368	17,464,000	0	2,371,584
40	Mar 20, 2026 18:48	19,898	37,234,346	16,480,000	1,030,000	2,428,928
41	Mar 20, 2026 18:48	19,931	38,800,825	16,508,000	1,031,000	2,408,448
42	Mar 20, 2026 18:49	20,056	38,905,936	15,573,000	2,076,000	2,469,888
43	Mar 20, 2026 18:09	35,948	52,482,227	29,594,000	2,040,000	2,318,336
44	Mar 20, 2026 18:09	35,974	58,125,360	30,636,000	1,021,000	2,457,600
45	Mar 20, 2026 18:09	36,059	56,584,311	28,662,000	3,070,000	2,555,904

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