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	1:20.1.2-0ubuntu1~24.04.3	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	3.0.13-0ubuntu3.11	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 listFeb 14, 2026 21:23

zielaj

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Source Code

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Challenge History

Date	Challenger	Cost	Type	Status
May 17, 2026 06:34	M-Rochat	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	May 17, 2026 06:34	0	10,182,942	1,129,000	0	2,113,536	expected "6442459076 ", got "2305422362 "
2	May 17, 2026 06:34	0	10,615,748	1,116,000	0	2,113,536	expected "6442459076 ", got "2305422362 "
3	May 17, 2026 06:34	0	9,212,460	1,106,000	0	2,113,536	expected "6442459076 ", got "2305422362 "
4	Feb 14, 2026 21:19	3,311	18,392,484	1,943,000	971,000	2,433,024
5	Feb 15, 2026 01:55	3,314	21,164,400	1,944,000	972,000	2,428,928
6	Feb 14, 2026 21:23	3,314	18,039,356	1,944,000	972,000	2,437,120
7	Feb 14, 2026 21:21	3,315	22,569,141	1,945,000	972,000	2,437,120
8	Feb 14, 2026 21:21	3,315	17,633,418	1,945,000	972,000	2,437,120
9	Feb 14, 2026 21:21	3,322	17,338,255	1,949,000	974,000	2,277,376
10	Feb 14, 2026 21:21	3,324	15,680,479	2,925,000	0	2,437,120
11	Feb 15, 2026 01:55	3,328	17,491,656	2,929,000	0	2,277,376
12	Feb 14, 2026 21:24	3,328	17,762,113	2,929,000	0	2,437,120
13	Feb 14, 2026 21:21	3,331	18,059,863	1,954,000	977,000	2,510,848
14	Feb 14, 2026 21:24	3,331	16,764,533	1,954,000	977,000	2,445,312
15	Feb 14, 2026 21:19	3,366	21,473,693	1,975,000	987,000	2,437,120
16	Feb 14, 2026 21:23	3,397	20,737,664	1,993,000	996,000	2,445,312
17	Feb 14, 2026 21:23	3,397	22,403,681	1,993,000	996,000	2,437,120
18	Feb 14, 2026 21:19	3,403	22,079,715	1,997,000	998,000	2,281,472
19	Feb 14, 2026 21:21	3,403	20,283,642	998,000	1,997,000	2,437,120
20	Feb 14, 2026 21:24	3,407	21,685,577	1,999,000	999,000	2,277,376
21	Feb 14, 2026 21:19	3,417	20,664,946	2,005,000	1,002,000	2,433,024
22	Feb 14, 2026 21:19	3,426	18,443,096	2,010,000	1,005,000	2,277,376
23	Feb 14, 2026 21:23	3,427	18,845,382	2,011,000	1,005,000	2,437,120
24	Feb 14, 2026 21:19	3,427	26,605,554	2,011,000	1,005,000	2,433,024
25	Feb 14, 2026 21:21	3,427	18,867,695	2,011,000	1,005,000	2,441,216
26	Feb 14, 2026 21:23	3,433	16,528,044	1,007,000	2,014,000	2,445,312
27	Feb 14, 2026 21:23	3,441	20,359,682	2,019,000	1,009,000	2,433,024
28	Feb 14, 2026 21:21	3,443	23,686,417	1,010,000	2,020,000	2,281,472
29	Feb 14, 2026 21:23	3,447	20,572,322	2,022,000	1,011,000	2,531,328
30	Feb 14, 2026 21:23	3,470	17,578,311	1,018,000	2,036,000	2,437,120
31	Feb 15, 2026 01:55	3,494	16,392,015	1,025,000	2,050,000	2,433,024
32	Feb 14, 2026 21:23	4,239	18,753,730	3,730,000	0	2,277,376
33	Feb 14, 2026 21:21	4,807	21,937,146	2,115,000	2,115,000	2,281,472

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