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 19:49

Yuriy LyfenkoError

Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Apr 24, 2026 13:12	Victor Mercklé	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Apr 24, 2026 13:12	0	17,110,154	4,290,000	1,072,000	2,416,640	expected "10885495828830 ", got "10885495782742 "	stderr
2	Apr 24, 2026 13:12	0	22,727,187	4,247,000	1,061,000	2,416,640	expected "10941327161577 ", got "10941327115768 "	stderr
3	Apr 24, 2026 13:12	0	21,121,640	4,293,000	1,073,000	2,420,736	expected "10967258690057 ", got "10967258643970 "	stderr
4	Mar 20, 2026 19:47	10,781	27,835,234	9,487,000	0	2,420,736
5	Mar 20, 2026 19:49	10,800	27,883,040	9,504,000	0	2,527,232
6	Mar 20, 2026 19:47	10,811	23,707,532	8,457,000	1,057,000	2,531,328
7	Mar 20, 2026 19:47	10,813	26,243,365	9,515,000	0	2,424,832
8	Mar 20, 2026 19:49	10,816	27,448,482	8,461,000	1,057,000	2,424,832
9	Mar 20, 2026 19:49	10,824	26,495,627	8,467,000	1,058,000	2,424,832
10	Mar 20, 2026 19:47	10,832	28,780,162	8,473,000	1,059,000	2,424,832
11	Mar 20, 2026 19:47	10,836	34,790,093	8,477,000	1,059,000	2,420,736
12	Mar 20, 2026 19:49	10,841	26,738,213	8,480,000	1,060,000	2,527,232
13	Mar 20, 2026 19:49	10,841	25,279,197	8,480,000	1,060,000	2,527,232
14	Mar 20, 2026 19:47	10,859	27,867,765	8,495,000	1,061,000	2,420,736
15	Mar 20, 2026 19:47	10,867	28,065,008	9,563,000	0	2,420,736
16	Mar 20, 2026 19:47	10,870	27,558,030	9,566,000	0	2,424,832
17	Mar 20, 2026 19:49	10,873	28,769,367	8,505,000	1,063,000	2,527,232
18	Mar 20, 2026 19:47	10,875	26,215,318	8,507,000	1,063,000	2,416,640
19	Mar 20, 2026 19:49	10,880	27,703,420	9,574,000	0	2,527,232
20	Mar 20, 2026 19:47	10,889	28,256,429	8,518,000	1,064,000	2,527,232
21	Mar 20, 2026 19:47	10,894	27,959,067	8,522,000	1,065,000	2,420,736
22	Mar 20, 2026 19:47	10,919	25,186,479	8,542,000	1,067,000	2,416,640
23	Mar 20, 2026 19:47	10,933	24,833,658	8,552,000	1,069,000	2,416,640
24	Mar 20, 2026 19:49	10,945	24,994,968	8,562,000	1,070,000	2,420,736
25	Mar 20, 2026 19:47	10,949	26,133,400	8,565,000	1,070,000	2,527,232
26	Mar 20, 2026 19:47	10,959	31,452,204	9,644,000	0	2,510,848
27	Mar 20, 2026 19:47	10,975	35,269,377	8,585,000	1,073,000	2,420,736
28	Mar 20, 2026 19:47	10,978	25,694,731	8,588,000	1,073,000	2,527,232
29	Mar 20, 2026 19:47	10,980	24,844,711	8,589,000	1,073,000	2,424,832
30	Mar 20, 2026 19:47	10,982	28,483,924	9,664,000	0	2,527,232
31	Mar 20, 2026 19:49	10,992	21,589,313	9,673,000	0	2,527,232
32	Mar 20, 2026 19:47	11,007	24,967,532	8,610,000	1,076,000	2,527,232
33	Mar 20, 2026 19:47	11,010	29,149,348	8,613,000	1,076,000	2,416,640
34	Mar 20, 2026 19:49	11,011	28,698,158	9,690,000	0	2,420,736
35	Mar 20, 2026 19:47	11,027	29,274,969	9,704,000	0	2,420,736
36	Mar 20, 2026 19:47	11,049	24,489,366	9,723,000	0	2,527,232
37	Mar 20, 2026 19:49	11,063	33,375,722	8,654,000	1,081,000	2,416,640
38	Mar 20, 2026 19:47	11,103	30,660,939	9,771,000	0	2,424,832
39	Mar 20, 2026 19:49	11,109	25,908,047	9,776,000	0	2,527,232
40	Mar 20, 2026 19:47	11,116	38,007,265	9,782,000	0	2,527,232
41	Mar 20, 2026 19:49	11,125	27,516,044	9,790,000	0	2,416,640
42	Mar 20, 2026 19:47	11,138	29,387,121	8,712,000	1,089,000	2,428,928
43	Mar 20, 2026 19:47	11,273	26,941,841	9,920,000	0	2,527,232
44	Mar 20, 2026 19:49	11,284	24,058,653	9,930,000	0	2,527,232
45	Mar 20, 2026 19:49	11,563	46,866,527	9,158,000	1,017,000	2,527,232

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