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.

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Challenge History

Date	Challenger	Cost	Type	Status
May 17, 2026 06:38	M-Rochat	10.00	Custom	Solution Broken

Run Statistics

#	Date	Score	Wall Time	CPU User	CPU System	Memory	Error
1	May 17, 2026 06:38	0	10,536,573	1,123,000	0	2,113,536	expected "6442459076 ", got "2305422578 "
2	May 17, 2026 06:38	0	8,449,891	1,202,000	0	2,113,536	expected "6442459076 ", got "2305422578 "
3	May 17, 2026 06:38	0	9,844,803	1,190,000	0	2,113,536	expected "6442459076 ", got "2305422578 "
4	Jan 17, 2026 18:01	3,344	16,705,272	1,962,000	981,000	2,277,376
5	Jan 17, 2026 02:50	3,348	17,365,737	1,964,000	982,000	2,355,200
6	Jan 17, 2026 02:27	3,349	26,379,321	2,947,000	0	2,277,376
7	Jan 17, 2026 18:01	3,349	24,950,705	1,965,000	982,000	2,355,200
8	Jan 17, 2026 02:27	3,352	21,539,116	1,967,000	983,000	2,273,280
9	Jan 23, 2026 04:00	3,352	18,029,264	1,967,000	983,000	2,359,296
10	Jan 17, 2026 02:50	3,361	21,014,040	2,958,000	0	2,355,200
11	Jan 17, 2026 02:28	3,366	14,892,528	1,975,000	987,000	2,355,200
12	Jan 17, 2026 02:27	3,366	25,525,097	1,975,000	987,000	2,351,104
13	Jan 24, 2026 01:57	3,369	23,743,344	2,965,000	0	2,277,376
14	Jan 22, 2026 03:23	3,369	18,052,931	1,977,000	988,000	2,367,488
15	Jan 24, 2026 01:05	3,373	16,270,136	1,979,000	989,000	2,277,376
16	Jan 24, 2026 01:05	3,373	23,749,782	1,979,000	989,000	2,277,376
17	Jan 17, 2026 18:01	3,373	18,355,002	1,979,000	989,000	2,359,296
18	Jan 17, 2026 02:50	3,376	16,567,359	1,981,000	990,000	2,355,200
19	Jan 24, 2026 01:57	3,378	20,795,139	1,982,000	991,000	2,347,008
20	Jan 17, 2026 02:27	3,380	21,844,527	1,983,000	991,000	2,347,008
21	Jan 17, 2026 02:28	3,382	17,049,808	1,984,000	992,000	2,277,376
22	Jan 24, 2026 20:20	3,385	21,916,559	1,986,000	993,000	2,351,104
23	Jan 24, 2026 01:38	3,389	21,568,594	1,988,000	994,000	2,359,296
24	Jan 23, 2026 04:00	3,389	21,518,130	1,988,000	994,000	2,359,296
25	Jan 17, 2026 18:01	3,390	23,258,196	1,989,000	994,000	2,355,200
26	Jan 17, 2026 18:01	3,392	21,073,523	1,990,000	995,000	2,359,296
27	Jan 17, 2026 02:46	3,399	17,240,439	1,994,000	997,000	2,351,104
28	Jan 17, 2026 02:27	3,399	24,774,728	1,994,000	997,000	2,355,200
29	Jan 22, 2026 04:43	3,400	18,127,739	1,995,000	997,000	2,351,104
30	Jan 24, 2026 01:38	3,406	21,528,259	1,998,000	999,000	2,363,392
31	Jan 17, 2026 02:50	3,407	19,390,405	1,999,000	999,000	2,355,200
32	Jan 24, 2026 01:05	3,409	20,919,504	2,000,000	1,000,000	2,277,376
33	Jan 24, 2026 20:20	3,413	22,499,207	1,001,000	2,002,000	2,355,200
34	Jan 22, 2026 04:43	3,413	19,993,422	2,002,000	1,001,000	2,359,296
35	Jan 23, 2026 04:03	3,413	21,108,223	2,002,000	1,001,000	2,355,200
36	Jan 23, 2026 04:00	3,419	25,458,741	2,006,000	1,003,000	2,277,376
37	Jan 17, 2026 02:27	3,426	18,224,040	2,010,000	1,005,000	2,277,376
38	Jan 22, 2026 03:23	3,430	17,693,877	1,006,000	2,012,000	2,355,200
39	Jan 24, 2026 01:57	3,430	20,048,063	1,006,000	2,012,000	2,355,200
40	Jan 17, 2026 02:46	3,443	19,177,643	2,020,000	1,010,000	2,277,376
41	Jan 17, 2026 02:46	3,443	22,477,626	2,020,000	1,010,000	2,535,424
42	Jan 24, 2026 20:20	3,447	19,416,689	1,011,000	2,022,000	2,363,392
43	Jan 17, 2026 02:27	3,447	17,420,546	1,011,000	2,022,000	2,453,504
44	Jan 17, 2026 18:01	3,460	16,592,560	1,015,000	2,030,000	2,355,200
45	Jan 17, 2026 18:01	3,461	25,893,090	1,015,000	2,031,000	2,363,392
46	Jan 17, 2026 02:50	3,461	21,324,565	2,031,000	1,015,000	2,355,200
47	Jan 22, 2026 04:43	3,466	15,491,821	3,050,000	0	2,519,040
48	Jan 17, 2026 02:50	3,467	19,876,534	2,034,000	1,017,000	2,482,176
49	Jan 17, 2026 02:27	3,474	24,526,602	2,038,000	1,019,000	2,359,296
50	Jan 24, 2026 01:38	3,488	16,875,877	2,046,000	1,023,000	2,363,392
51	Jan 17, 2026 02:50	3,515	19,426,794	2,062,000	1,031,000	2,478,080
52	Jan 17, 2026 02:50	3,528	23,897,650	2,070,000	1,035,000	2,277,376
53	Jan 17, 2026 18:01	3,528	25,596,712	1,035,000	2,070,000	2,351,104
54	Jan 24, 2026 01:04	3,540	21,499,485	2,077,000	1,038,000	2,363,392
55	Jan 17, 2026 02:27	3,557	16,925,165	2,087,000	1,043,000	2,355,200
56	Jan 24, 2026 01:04	3,560	23,771,279	2,089,000	1,044,000	2,367,488
57	Jan 23, 2026 04:03	3,564	21,125,071	2,091,000	1,045,000	2,359,296
58	Jan 17, 2026 02:50	3,591	18,463,374	1,053,000	2,107,000	2,355,200
59	Jan 22, 2026 03:23	3,809	18,635,666	2,235,000	1,117,000	2,347,008
60	Jan 17, 2026 02:28	4,303	21,733,844	3,787,000	0	2,355,200
61	Jan 24, 2026 01:04	4,306	25,743,556	3,789,000	0	2,359,296
62	Jan 23, 2026 04:03	4,409	20,187,654	1,940,000	1,940,000	2,531,328
63	Jan 17, 2026 18:01	4,455	20,954,180	2,940,000	980,000	2,355,200

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