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 listJan 18, 2026 04:41

Josu San MartinError

Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
Apr 24, 2026 17:49	Victor Mercklé	32.21	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	Apr 24, 2026 17:49	0	20,310,013	4,071,000	2,035,000	2,314,240	expected "10947866042763 ", got "10947865394174 "
2	Apr 24, 2026 17:49	0	20,374,167	4,047,000	2,023,000	2,318,336	expected "10829714066797 ", got "10829713422272 "
3	Apr 24, 2026 17:49	0	24,179,861	5,163,000	1,032,000	2,318,336	expected "11248478716060 ", got "11248478070265 "
4	Jan 18, 2026 04:43	10,706	32,591,238	9,421,000	0	2,461,696
5	Jan 18, 2026 04:43	10,709	24,599,058	8,377,000	1,047,000	2,265,088
6	Jan 18, 2026 04:43	10,717	26,351,554	9,431,000	0	2,265,088
7	Jan 18, 2026 04:41	10,722	27,164,154	9,435,000	0	2,281,472
8	Jan 18, 2026 04:43	10,735	31,878,431	9,447,000	0	2,281,472
9	Jan 18, 2026 04:41	10,755	24,954,998	7,361,000	2,103,000	2,281,472
10	Jan 18, 2026 04:41	10,759	27,195,350	8,416,000	1,052,000	2,277,376
11	Jan 18, 2026 04:43	10,761	31,233,801	8,418,000	1,052,000	2,535,424
12	Jan 18, 2026 04:43	10,773	26,753,570	8,427,000	1,053,000	2,527,232
13	Jan 18, 2026 04:41	10,776	26,929,718	7,376,000	2,107,000	2,281,472
14	Jan 18, 2026 04:43	10,802	28,690,417	8,450,000	1,056,000	2,277,376
15	Jan 18, 2026 04:43	10,818	24,314,008	8,463,000	1,057,000	2,277,376
16	Jan 18, 2026 04:43	10,827	23,097,774	7,411,000	2,117,000	2,269,184
17	Jan 18, 2026 04:43	10,830	27,659,315	9,530,000	0	2,281,472
18	Jan 18, 2026 04:43	10,848	26,334,164	7,425,000	2,121,000	2,273,280
19	Jan 18, 2026 04:43	10,852	23,151,367	8,489,000	1,061,000	2,523,136
20	Jan 18, 2026 04:41	10,892	25,903,266	8,520,000	1,065,000	2,383,872
21	Jan 18, 2026 04:43	10,898	26,544,163	8,525,000	1,065,000	2,273,280
22	Jan 18, 2026 04:41	10,919	26,129,405	7,474,000	2,135,000	2,269,184
23	Jan 18, 2026 04:43	10,928	26,088,103	8,549,000	1,068,000	2,531,328
24	Jan 18, 2026 04:43	10,940	25,422,837	8,558,000	1,069,000	2,281,472
25	Jan 18, 2026 04:41	10,948	26,067,877	7,493,000	2,141,000	2,281,472
26	Jan 18, 2026 04:43	10,955	25,282,044	8,569,000	1,071,000	2,523,136
27	Jan 18, 2026 04:41	10,955	29,613,865	8,569,000	1,071,000	2,269,184
28	Jan 18, 2026 04:41	10,970	28,063,768	8,582,000	1,072,000	2,326,528
29	Jan 18, 2026 04:43	11,016	27,180,677	9,694,000	0	2,281,472
30	Jan 18, 2026 04:43	12,734	28,793,816	8,150,000	3,056,000	2,281,472

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