Great Internet Mersenne Prime Search (GIMPS)

Prime95, also distributed as a command-line utility mprime under FreeBSD and Linux, is a freeware application written by George Woltman. It is used by Great Internet Mersenne Prime Search (GIMPS), a distributed computing project dedicated to Mersenne prime hunting. In overclocking circles, its also commonly used for stability testing.

This repo is a mirror to Free Mersenne Prime Search Software source code for Windows, Linux, FreeBSD, and Mac OS X.

You could download the latest code from GIMPS or release page.

Mirror rank from PrimeNet Top Overall Teams

Top producers for the last year.
This hourly report generated 2026-04-01 12:00 UTC

Rank	Team Name	Total GHz Days	90 day	30 day	7 day	1 day	TF	P-1	LL/PRP	DC	ECM	ECM-F
1	GIMPS.Russia	885811338					0.2		0.1		99.7
2	Slovakia	761355544	⬆ 1				0.1	98.6	0.1		1.2
3	PrimeNet	337613778	⬇ 1	⬆ 1			0.1	97.4	0.3	0.4	1.9
4	POLAND	269960429		⬇ 1			0.4	98.2	0.2		1.2
5	-Too many Ones-	177735077					0.2	91.6			8.2
6	Ars Technica Team Prime Rib	96110181						98.9		1.0
7	unRAID	33446630						99.6	0.3
8	GIMPSChina	22098538					72.1	19.3	4.0	0.6	4.0
9	More Power!!!	14320492	⬆ 1				13.6	55.6	1.9	1.0	27.8
10	One Man Team	13942885	⬇ 1					99.5	0.5
11	GW's legions	12854046					0.1	0.9	32.0	1.1	65.9
12	Team-Deutschland	12465064		⬆ 1			3.1	22.6	0.4	0.1	73.6
13	UCM-curtisc	11787246		⬇ 1					99.3	0.7
14	szerverem.hu	7611910	⬆ 15	⬆ 1	⬆ 1		5.6	38.7	44.8	4.9	6.0
15	TeamUK	7566967	⬇ 1	⬇ 1	⬇ 1		42.8	4.2	18.0	1.3	33.5	0.1
16	Porta Kruse	6418326	⬆ 1				2.0	0.3			91.4	6.1
17	GPU to 72	4667994	⬇ 2				54.0	26.2	0.5	3.9	15.1
18	Numberphile	2819644		⬆ 1	⬆ 1	⬆ 1	26.5	43.0	22.8	6.6	0.7
19	SpongeBob SquarePants	2818110	⬇ 3	⬇ 1	⬇ 1	⬇ 1		31.0	59.7	9.2	0.1
20	tsc	2408296					83.1	5.2	1.5	0.3	10.0
21	UW Eau Claire	2102147	⬆ 44	⬆ 7	⬆ 2	⬆ 1	87.3		9.4	3.3
22	UKRAINE	2056545	⬇ 1	⬇ 1	⬇ 1	⬇ 1	24.8	13.6	43.9	17.5
23	Wikipedia	2033423	⬇ 1		⬇ 1		60.0	32.7	4.0	2.2	0.8
24	Dutch Power Cows	1711424	⬇ 5	⬇ 2			31.6	28.4	1.4	1.5	37.2
25	GIMPS.USA	1463926	⬇ 1				8.0	0.4	4.5	1.6	85.4
26	Swedes Of Primes	1386829	⬇ 3	⬇ 2			0.5	81.5	15.4	2.6
27	GIMPS.Japan	1368456	⬇ 2				4.7	0.1	9.0	2.2	83.9
28	GIMPS.Occitania	1210157	⬇ 2	⬇ 2				4.4				95.6
29	GIMPS.Korea	807048	⬆ 8	⬆ 3			89.2	4.6	5.2	0.9	0.1
30	MBAi.Cloud	739576	⬆ 1	⬇ 1					100.0
31	MATHSareREAL	636521	⬇ 4				95.7		3.1	1.2
32	MOXA	569130	⬇ 4	⬇ 2			99.0		0.7	0.3
33	citizenscience.ru	545990	⬇ 1	⬆ 2			88.5	3.7	3.5	0.8	2.9	0.5
34	Buhr	448979		⬆ 2	⬆ 1		57.9	3.6	19.4	5.8	13.3
35	Rechenkraft.net	448748	⬇ 5	⬇ 2	⬇ 1		4.9	56.2	3.5	5.5	29.4	0.6
36	Terry Kim Team	432812	⬇ 3	⬇ 2			97.2		1.8	0.6
37	S485122	308523	⬇ 1					95.0		5.0
38	Smoke-it	265954	⬇ 3				90.5	7.1	1.8
39	Colorado School of Mines	227441	⬆ 42	⬆ 9			91.7		6.4	2.0
40	randomteam	208173	⬆ 3	⬆ 1							100.0
41	GIMPS Team Philippines	205400	⬆ 4	⬆ 2	⬆ 2		69.6		4.5	1.6	22.0
42	YahsTeam	204553	⬇ 4	⬇ 3	⬇ 1		89.2		8.9	2.0
43	NerdyGirls	202344	⬇ 1	⬇ 1	⬇ 1			42.4	7.2	50.4
44	nranks	196552	⬆ 2	⬇ 4	⬆ 1		36.5	0.6	3.6	0.4	58.8
45	Canada	192064	⬇ 6	⬇ 1	⬆ 1			2.8	65.4	31.0
46	404 - "Primes not Found"	190580	⬆ 22	⬇ 1	⬇ 2		78.1		21.9
47	Team Tartan	186715	⬇ 6	⬇ 1					76.6	23.4
48	OverclockerAustralia	149451	⬇ 1	⬆ 1			58.8		20.9	16.8
49	GIMPS China	130550	⬇ 9	⬇ 2			92.0		3.9	0.2	3.6
50	BitMEX Research	128059	⬇ 6						95.2	4.8
51	Team China	122735	⬆ 1						99.7	0.3
52	GIMPS.NZ	120915	⬇ 2				78.7		10.3	11.1
53	Unicamp	120863	⬆ 3				71.7	0.1	23.5	4.7
54	SASAKI	111208					100.0
55	GIMPS.France	107177	⬆ 11	⬆ 3	⬆ 1		10.4	61.1	3.7	11.7	12.9
56	EgyptianPolymaths	105751	⬇ 1	⬇ 1	⬇ 1			40.8			53.5
57	Wisconsin	101657	⬇ 4				47.7		27.6	24.6
58	Cap'n Entropy's Cavalcade of Wonderment	97568	⬇ 9	⬇ 2			74.6	5.8	17.4	2.1
59	SHADO	90482	⬇ 1	⬆ 1					66.7	16.0	10.1	1.9
60	NanJing Tech	86248	⬆ 91	⬆ 34	⬆ 6		33.1		60.3	6.6
61	UIUC	83186	⬆ 3		⬇ 1				70.3	29.7
62	Argentina	79172	⬆ 170	⬆ 118	⬆ 8	⬆ 2			100.0
63	AMD Users	77204	⬆ 9	⬆ 2		⬇ 1	60.4	0.8	12.3	26.0	0.5
64	Net-Work	76345	⬇ 4	⬇ 2	⬇ 3	⬇ 1	3.3	1.8			86.4
65	Eratosthenes Sieve	74898	⬇ 2	⬇ 2	⬇ 3		0.7		95.4	3.8
66	Esperanto	69958	⬇ 4	⬇ 2	⬇ 2			25.0	8.9	65.9	0.2
67	Hungary	69325	⬇ 10	⬇ 8	⬇ 2		0.5		2.4	1.8	94.9
68	AJ	64423	⬆ 7	⬆ 1	⬇ 1				76.1	23.9
69	Wile E. Coyote	63231	⬆ 11	⬆ 5	⬇ 1				77.7	2.1	20.2
70	IOTA	59449	⬆ 162	⬆ 12	⬆ 4	⬆ 1	94.9		2.8	2.3
71	Team_Italia	59391			⬇ 2	⬇ 1	2.7		69.8	21.1	2.1	3.5
72	ParadoxZ Commando	58495	⬇ 2	⬇ 2	⬇ 1				72.6	27.3
73	Team Israel	57896	⬇ 4	⬇ 5	⬇ 1		97.3		1.4	1.4
74	S147127	55807	⬆ 2	⬆ 1	⬆ 1		27.0		11.8	61.1
75	GIMPS.NEO	54403	⬇ 8	⬇ 8	⬇ 2				76.9	23.1
76	Brno University of Technology	53988	⬇ 15	⬇ 4				19.1	65.4	15.5
77	ComputerraRU	52305	⬇ 4		⬆ 1		19.7		71.3	9.0
78	Team Belgium	51102	⬇ 4	⬇ 5	⬇ 1		1.1	8.1	34.9	15.4	40.5
79	LTT fans	44381	⬇ 20	⬇ 3			32.4		5.2	0.5	61.9
80	Team Viet Nam	43404	⬇ 2	⬇ 2			28.1		30.7	30.5	10.7
81	HardOCP	38032	⬆ 7	⬆ 2	⬆ 2				75.3	24.7
82	Team H	36613	⬆ 1	⬇ 1	⬆ 3		11.7	0.4	87.4	0.5
83	Turku	36285	⬆ 48	⬆ 8	⬇ 2				100.0
84	Team Austria	36016	⬇ 5	⬇ 5	⬇ 2		94.7	0.6	4.7
85	Debian	35649	⬆ 4		⬇ 1				98.4	1.6
86	huskers-gimps	35314	⬆ 4						73.5	26.5
87	Hermessz	31427	⬇ 1				65.3		34.7
88	socal_prime	30885	⬇ 3		⬆ 1			1.0	68.1	30.7	0.1
89	MES-Team	30646	⬇ 12	⬇ 5	⬇ 1		71.8	7.3		20.9
90	Small-Team-2000	28840	⬇ 3						10.9	89.1
91	ᕙ(⇀‸↼‶)ᕗ	27985	⬆ 24	⬆ 2			0.8		98.8	0.4
92	VIPR	26435	⬆ 27	⬆ 6			64.0		23.9	12.2
93	LimePrime	23482	⬇ 11	⬇ 4				6.0	86.2	7.8
94	The Fellowship of Infinity	23404	⬆ 12	⬆ 2					99.5	0.5
95	Costa Rica	22547	⬇ 4	⬇ 3	⬆ 1				71.9	27.7
96	Channel 4	22411	⬆ 8	⬇ 1	⬇ 1				81.1	18.9
97	MurrayInfoSys	20157	⬆ 13	⬆ 4					66.7	33.3
98	Team Retired	19732	⬇ 3	⬇ 1					27.8	10.8
99	PrimitiveRootsCircle	19166	⬆ 2				22.6		49.5	25.3	2.5
100	A Single Engineer	18836	⬇ 1	⬆ 2	⬆ 1				74.0	26.0
101	SpartaAlumni	16824	⬇ 1	⬆ 2	⬆ 1				69.4	30.6
102	Ozzie Prime	16207	⬇ 4	⬆ 3	⬆ 1			4.4	43.5	15.1		37.0
103	Nerdfighters for Mersenne Primes	15020	⬆ 2	⬆ 5	⬆ 2				88.0	12.0
104	Team Norway	14961	⬇ 10	⬆ 3			80.4			5.1	14.4
105	Spain	14918	⬇ 13	⬆ 4	⬆ 1				62.8	37.2
106	GIMPS.Portugal	14450	⬆ 1	⬆ 4	⬆ 2		0.1	72.4		27.5
107	Quantus	14447	⬇ 11	⬇ 1			8.4		21.5	26.3		43.7
108	SETI.Germany	14419	⬆ 6	⬆ 3	⬆ 1			6.6	22.0	71.4
109	NUST	14223	⬆ 40	⬆ 7	⬆ 1		16.4	74.6	5.9	3.0
110	Georgia Tech	13974	⬇ 62	⬇ 44	⬇ 10	⬆ 2			100.0
111	Portland State University	13865	⬇ 18	⬇ 11		⬇ 1		32.7	51.9	15.4
112	Team Finland	13653	⬇ 61	⬇ 32		⬇ 1	0.9		97.1		2.0
113	Mensa	12705	⬆ 4	⬆ 4	⬆ 1				74.2	25.8
114	Team Slovenia	11901	⬇ 17	⬇ 2	⬆ 2				71.8	28.2
115	moeses	11803	⬇ 6	⬇ 2					99.0	1.0
116	Aiblspitz	11608	⬆ 16	⬆ 17	⬆ 5		1.4	72.4	13.6	11.1	1.4
117	MadPoo	11398	⬇ 33	⬇ 13	⬇ 4			41.2		58.8
118	Politeknik Banting, Selangor	11308	⬇ 16	⬇ 3			88.6		7.0	4.4
119	GIMPS.Taiwan	11100	⬇ 16	⬇ 5	⬇ 2				85.7	13.8	0.1
120	FREE ROBUX	10852	⬆ 112	⬆ 1					100.0
121	Granada	10708	⬇ 13	⬇ 3	⬇ 2		32.6		14.6	52.1
122	Royal Military College of Canada	10691	⬇ 2				89.7		7.9	2.4
123	Com Systems (RU)	10562	⬆ 24	⬆ 4					66.4	33.6
124	Server66	9937	⬆ 4				100.0
125	Shaffer's Studio	9698	⬆ 1		⬆ 4				88.0	11.9
126	Syntony	9649	⬇ 3	⬆ 2	⬇ 1					100.0
127	RobotechResearch	9444	⬆ 54	⬆ 8	⬇ 1				42.6	57.4
128	Die Zeitfinder	9249	⬇ 12	⬆ 2					91.6	8.4
129	FreeBSD	9072	⬇ 11	⬇ 6	⬆ 3		0.5		78.0	21.5
130	JiBoTeam	8829	⬇ 5	⬆ 2	⬆ 1					100.0
131	TurkishMath	8642	⬇ 7	⬆ 5	⬆ 2				82.1	17.9
132	Hyperion	8585	⬇ 21	⬇ 13	⬇ 5					25.8
133	MES22-Team	8136	⬇ 20	⬇ 7	⬆ 2		100.0
134	Abacus	8133	⬇ 13	⬇ 14					96.3	3.7
135	Triangle	8088	⬇ 8	⬇ 4	⬇ 5				96.0	4.0
136	Team Splunk	7605	⬇ 3	⬆ 2	⬆ 1			28.1	71.9
137	University of Waterloo	7461	⬆ 1	⬆ 2	⬆ 1				100.0
138	irowiki	7202	⬇ 9	⬇ 1	⬆ 1					100.0
139	Brasil	6665	⬇ 5	⬆ 1	⬆ 1				82.0	17.9
140	Prime Rib	6538		⬆ 1	⬆ 1				96.6	3.4
141	SU Prime Pirates	6437	⬇ 5	⬆ 1	⬆ 1				61.5	38.5
142	youngfun429	6098	⬇ 30	⬇ 13	⬇ 6				50.6	49.4
143	Team Christensen	5977	⬇ 4	⬆ 1						100.0
144	Elisabeth-von-Thadden-Schule	5757	⬇ 3	⬇ 1	⬆ 1				40.3	59.7
145	Furry Primes	5405	⬇ 15	⬇ 11	⬆ 1		79.0			21.0
146	GIMPS Romania	5262	⬇ 2	⬇ 1	⬇ 2	⬆ 5	4.6		90.4	4.9
147	teamMALI	5165	⬇ 5	⬆ 2		⬇ 1			75.5	24.5
148	nmbarek_team	4954	⬇ 26		⬆ 1	⬇ 1			99.8	0.2
149	Hong Kong GIMP	4912	⬆ 6	⬆ 1	⬆ 1	⬇ 1			63.7	36.3
150	The_Dude_Abides	4871	⬇ 7	⬇ 3	⬇ 2	⬇ 1	36.7			54.6
151	Danpi for GIMPS	4710	⬆ 1	⬆ 1		⬇ 1	100.0
152	zeit	4288	⬇ 4	⬇ 1	⬆ 1	⬆ 1	2.1			97.9
153	México mágico	4206	⬆ 21	⬆ 6	⬆ 2	⬆ 1			75.3	24.7
154	Crunching@EVGA	4104	⬆ 26	⬆ 3	⬆ 2	⬆ 1			99.7	0.3
155	Olympic College	4079	⬆ 2	⬇ 2	⬇ 3	⬇ 3				100.0
156	FactorMania	4019	⬆ 28		⬆ 1			58.1			41.9
157	Noam Karni Team	3952	⬆ 15	⬆ 1	⬆ 1				80.0	20.0
158	Kabylie	3786	⬇ 2	⬇ 4	⬆ 1		14.9	4.3	41.1	39.7
159	GIMPS.Hong Kong	3644	⬇ 1	⬆ 3	⬆ 5		2.2		65.3	32.5
160	Korea.Prime	3637	⬆ 15						64.6	35.4
161	WSU Cougars	3219	⬇ 26	⬇ 15	⬇ 7				47.7	52.2
162	3DCenter.org	3010	⬇ 12	⬇ 7	⬇ 1						100.0
163	Team_Brazil	2999	⬆ 2		⬇ 1		83.1	0.2		16.7
164	Phi Kappa Theta	2820	⬇ 3		⬇ 1				56.0	44.0
165	I Love Canadian Natural Resources	2507	⬇ 5							100.0
166	Pi Rho	2499	⬆ 66						67.1	32.9
167	GIMPSMalaysia	2394	⬆ 21	⬆ 1					66.8	33.2
168	VRS_SE	2360	⬆ 1	⬆ 1					66.8	33.2
169	Saudi Primes	2268	⬇ 3	⬆ 2	⬆ 1					100.0
170	GIMPS_KS	2199	⬆ 34	⬆ 2	⬆ 1				36.5	62.0	1.4
171	Obsidian	2082	⬆ 7	⬆ 5	⬆ 1					100.0
172	TunisianTeam	2052	⬇ 13	⬇ 2	⬆ 1				37.7	62.3
173	Arpan Sen Labs	2050	⬆ 59	⬆ 37	⬆ 1				20.6	79.4
174	Subprime Searches	2002	⬇ 7	⬇ 1	⬆ 2		87.2			12.8
175	The Prime Pioneers	1972	⬆ 14	⬇ 8			1.2	98.8
176	The Pensis	1869		⬇ 2	⬆ 1					100.0
177	F=dp/dt	1845		⬇ 2	⬆ 1				85.8	14.2
178	GIMPS_IOM	1712	⬆ 1	⬆ 1	⬆ 1		100.0
179	San Francisco	1586	⬆ 3	⬆ 3	⬆ 1				100.0
180	ANDY	1582	⬇ 27	⬆ 1	⬆ 1				98.8	1.2
181	cr_colorado	1549	⬆ 51	⬆ 3	⬆ 1					100.0
182	International School of Beijing (ISB)	1544	⬇ 45	⬇ 21	⬇ 13				99.3	0.7
183	Zorin OS Crew	1470	⬇ 20	⬇ 5					52.5	47.5
184	CZAsTc	1447	⬆ 47	⬆ 1					99.6	0.4
185	math.auth.gr	1355	⬆ 22	⬆ 1					61.7	38.3
186	Czech National Team	1182	⬆ 14	⬆ 3	⬆ 1		3.2		70.1	24.2	1.5
187	Morocco	1066	⬆ 45	⬆ 3	⬆ 1	⬆ 1				100.0
188	His Dark Materials	1058	⬇ 17	⬇ 5	⬇ 2	⬇ 1				41.2	58.7
189	Therian Primes	1007	⬆ 43	⬆ 11				14.6		52.4	33.0
190	Optimists Prime	925	⬇ 44	⬇ 13				100.0
191	TimE4This	876	⬇ 8	⬇ 4	⬆ 1					100.0
192	alan145	845	⬇ 28	⬇ 4	⬇ 1		99.5			0.5
193	AWC	801	⬆ 39	⬇ 1					100.0
194	GIMPS Asturias	794	⬇ 2	⬇ 1					99.6	0.4
195	Weatopians	793	⬇ 2	⬇ 1					99.7	0.3
196	Sæve Nordic Prime	781	⬇ 2	⬇ 1					100.0
197	hreid	776	⬇ 1	⬇ 1					100.0
198	Join Us 😈	708	⬆ 10	⬆ 4			100.0
199	SGDynamo Dresden	580	⬆ 2	⬆ 4			100.0
200	PrimeObsession	539	⬆ 6	⬆ 4						100.0
201	London Computation Club	478	⬆ 10	⬆ 4						100.0
202	Team Dominik Radler	351	⬆ 10	⬆ 4			100.0
203	/r/counting	337	⬆ 20	⬆ 4
204	KnightLight	315	⬆ 10	⬆ 4						99.3
205	Yurunago	276	⬆ 27	⬆ 4						100.0
206	www.Adamek.biz	265	⬆ 9	⬆ 5						100.0
207	Math Teachers of the World	259	⬆ 9	⬆ 6					100.0
208	GIMPS Hams	253	⬆ 9	⬆ 6				100.0
209	DividerHunt	221	⬆ 11	⬆ 6			100.0
210	Manri Costa Rica	213	⬇ 19	⬆ 6						100.0
211	30thousandwon	193	⬆ 11	⬆ 6						100.0
212	Team Bulgaria	165	⬇ 10	⬆ 6							99.9
213	miiro	150	⬆ 19	⬆ 6			100.0
214	GIMPS.Peace	122	⬆ 11	⬆ 6			44.7	55.3
215	TeamUbuntu	121	⬆ 9	⬆ 6						100.0
216	sannerud.com	108	⬆ 13	⬆ 6			43.1				19.4	37.5
217	PROMYS	23	⬆ 10	⬆ 8	⬆ 1						100.0
218	PARG team	21	⬆ 14	⬆ 8	⬆ 1						100.0
219	TeamEc	1	⬇ 14	⬆ 5	⬆ 2						100.0
220	yfinder	1	⬆ 1	⬆ 7	⬆ 2					100.0