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 2025-12-30 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	997164008	⬆ 1				0.4		0.1		99.5
2	PrimeNet	804180047	⬇ 1					98.9	0.1	0.2	0.8
3	Slovakia	690641495					0.2	97.6			2.2
4	POLAND	456240424					0.3	99.1	0.1		0.5
5	-Too many Ones-	254157258					0.4	87.5			12.1
6	Ars Technica Team Prime Rib	34336577	⬆ 1				0.3	94.6	0.1	2.2	2.7
7	unRAID	34154672	⬇ 1					99.5	0.4		0.1
8	GIMPSChina	21871773					82.9	10.4	4.2	0.8	1.6
9	One Man Team	16983245						99.5	0.5
10	More Power!!!	14306683					13.9	55.8	1.7	0.7	27.9
11	GW's legions	12700790		⬆ 1			0.1	0.9	28.7	0.5	69.8
12	Team-Deutschland	12432482		⬇ 1			4.0	4.9	0.6	0.2	90.2
13	UCM-curtisc	11899367							99.4	0.6
14	TeamUK	7361695	⬆ 2				36.9	7.2	19.4	1.2	35.1	0.2
15	GPU to 72	5282628					65.2	21.6	0.9	3.2	9.1
16	SpongeBob SquarePants	4737297	⬇ 2				6.6	30.0	49.6	12.0	1.7
17	Porta Kruse	3074572	⬆ 20	⬆ 18	⬆ 4	⬆ 2				0.1	90.8	8.8
18	Numberphile	3014846				⬇ 1	33.8	39.3	18.3	6.7	1.5
19	Dutch Power Cows	2944595	⬇ 2	⬇ 2	⬇ 2	⬇ 1	28.2	37.3	1.0	0.5	33.0
20	tsc	2419527	⬇ 1	⬇ 1	⬇ 1		91.3	6.6	1.5	0.2	0.4
21	UKRAINE	2239930	⬇ 1	⬇ 1	⬇ 1		38.4	16.1	31.4	14.0
22	Wikipedia	1725481	⬆ 2	⬆ 1			65.4	27.1	4.4	2.6	0.3
23	Swedes Of Primes	1554884	⬇ 1	⬇ 1				84.1	13.5	2.4
24	GIMPS.USA	1426473	⬇ 1				5.9	0.2	3.4	2.3	88.0
25	GIMPS.Japan	1337696	⬇ 4	⬇ 4			4.5	0.1	7.8	1.6	85.9
26	GIMPS.Occitania	1276739	⬆ 17	⬇ 1								100.0
27	MATHSareREAL	729475	⬆ 1	⬇ 1			96.7		2.5	0.9
28	MOXA	703793	⬇ 3	⬇ 1			98.6		1.0	0.4
29	Rechenkraft.net	547432	⬇ 2	⬇ 1			8.4	60.4	2.8	5.4	22.2	0.7
30	MBAi.Cloud	491208	⬇ 1	⬇ 1					100.0
31	citizenscience.ru	433137	⬆ 1	⬇ 1			82.3	7.3	3.6	1.2	2.9	2.6
32	Terry Kim Team	427282	⬆ 2	⬇ 1			97.9		1.1	0.4
33	szerverem.hu	410855	⬆ 208	⬆ 205	⬆ 201		1.4	0.3	98.3
34	Buhr	376149	⬆ 5		⬇ 1		66.5	0.7	22.6	6.8	3.4
35	Smoke-it	335294	⬇ 4	⬇ 3	⬇ 1		91.8	5.6	1.7	0.1
36	S485122	315387	⬇ 1	⬇ 3	⬇ 1			95.0		5.0
37	GIMPS.Korea	286122	⬆ 49	⬆ 12	⬇ 1		80.2	6.5	11.8	1.3	0.3
38	YahsTeam	209470	⬆ 4	⬆ 3			88.9		9.7	1.5
39	Canada	205057	⬇ 6	⬆ 1		⬆ 1		5.3	61.4	32.2
40	GIMPS China	204713	⬇ 10	⬇ 4	⬇ 3	⬇ 1	96.1		1.1	0.3	2.3
41	Team Tartan	200114	⬆ 3	⬇ 3	⬇ 1				77.2	22.8
42	NerdyGirls	194709	⬆ 5	⬆ 4	⬆ 1		6.0	31.8	10.5	51.7
43	randomteam	188950	⬆ 3	⬇ 1	⬇ 1						100.0
44	BitMEX Research	187816	⬇ 3	⬇ 5	⬇ 3				95.2	4.8
45	nranks	171096	⬆ 3	⬇ 1	⬇ 1		44.3	0.8	3.8	0.8	50.3
46	GIMPS Team Philippines	171020	⬇ 1	⬇ 3	⬇ 1		90.2		2.8	2.2	4.8
47	OverclockerAustralia	147196	⬆ 4	⬆ 1			59.7		21.2	15.6
48	Georgia Tech	140967	⬇ 12	⬇ 11	⬇ 2		95.3	3.0	1.6
49	Team Finland	131411	⬇ 11	⬇ 2	⬇ 1		89.5	0.3	10.1		0.2
50	Cap'n Entropy's Cavalcade of Wonderment	128850			⬇ 1		78.8	4.5	14.6	2.1
51	GIMPS.NZ	125848	⬇ 2		⬇ 1		79.0		10.4	10.5
52	Team China	120864	⬆ 5	⬆ 2	⬇ 1				99.7	0.3
53	Wisconsin	118555	⬆ 1	⬇ 1	⬇ 1		56.3		26.0	17.7
54	SASAKI	117184	⬇ 2	⬇ 1	⬇ 1		100.0
55	EgyptianPolymaths	108196	⬆ 4	⬆ 1	⬇ 1		3.0	23.5		0.9	67.6
56	Unicamp	97693	⬆ 29	⬆ 4	⬇ 1		74.5	0.3	19.4	5.8
57	Hungary	95217	⬆ 13	⬆ 1	⬇ 1		0.7	0.1	1.9	2.9	94.1
58	SHADO	85411	⬆ 4	⬆ 1	⬇ 1				64.7	17.1	10.4	2.3
59	LTT fans	82504	⬆ 2	⬆ 2			55.0		9.3	3.1	32.5
60	Brno University of Technology	81080	⬆ 3	⬇ 3	⬇ 2			42.5	48.2	9.3
61	Net-Work	80044	⬇ 1	⬆ 1	⬇ 1			3.1			89.2
62	Esperanto	76068	⬇ 6	⬆ 1	⬇ 1			23.2	25.1	51.5	0.2
63	UIUC	73438	⬆ 3	⬆ 5	⬆ 1				68.3	31.7
64	Eratosthenes Sieve	72681		⬆ 1	⬇ 1		0.8		99.2
65	GIMPS.France	68943	⬇ 12	⬆ 4	⬆ 1		16.2	24.8	6.9	31.8	20.1
66	GIMPS.NEO	68096	⬆ 1	⬆ 1	⬇ 1				75.4	24.6
67	UW Eau Claire	63954	⬆ 174	⬆ 51	⬆ 1				70.0	30.0
68	404 - "Primes not Found"	63234	⬆ 4	⬆ 4	⬆ 1		39.2		60.8
69	Team Israel	62978		⬇ 3	⬇ 2		96.6		1.3	2.2
70	ParadoxZ Commando	57232	⬆ 3	⬆ 3	⬆ 1				75.5	24.5
71	Team_Italia	54755	⬆ 3	⬆ 3	⬇ 1		2.2		72.2	18.1	1.8	4.9
72	AMD Users	53018	⬇ 14	⬇ 1	⬆ 1	⬆ 1	76.4		16.4	7.2
73	ComputerraRU	52788	⬇ 18	⬇ 9	⬇ 1	⬇ 1	17.2		71.0	11.8
74	Team Belgium	47892	⬇ 9	⬇ 4			1.5	6.6	47.5	15.6	28.7
75	AJ	47648		⬆ 3	⬆ 2				75.2	24.8
76	S147127	46235		⬆ 1			18.7		8.3	73.0
77	MES-Team	45435	⬇ 6	⬇ 2	⬇ 2		72.0	7.3		20.7
78	Team Viet Nam	43809	⬇ 52	⬇ 23			27.9		30.4	31.1	10.6
79	Team Austria	43543	⬇ 11	⬇ 3			97.1			2.9
80	Wile E. Coyote	41492	⬆ 2	⬇ 1					81.2	7.0	11.8
81	LimePrime	39366	⬇ 2	⬇ 1		⬆ 1		6.6	88.8	4.6
82	MadPoo	38646	⬇ 42	⬇ 37	⬇ 20	⬇ 1		12.2	10.6	77.3
83	Team H	37051	⬇ 5	⬇ 1	⬇ 1	⬆ 1	8.0	1.9	89.6	0.5
84	socal_prime	36817	⬇ 7	⬇ 3	⬇ 1	⬇ 1		1.1	68.7	30.0	0.1
85	Colorado School of Mines	36769	⬆ 48	⬆ 29	⬆ 4		59.8		30.8	9.4
86	Hermessz	33194	⬇ 5	⬇ 3	⬇ 2		56.7		41.9	1.3
87	HardOCP	29079	⬆ 6	⬇ 1	⬇ 1				79.5	20.5
88	Small-Team-2000	28382	⬆ 1	⬇ 3	⬇ 1				11.0	89.0
89	Debian	27695	⬆ 12		⬇ 4				98.1	1.9
90	huskers-gimps	26071	⬆ 15	⬆ 4	⬇ 2				74.1	25.9
91	Costa Rica	23237	⬆ 1		⬇ 1				69.9	29.7
92	Spain	22109	⬇ 5	⬇ 8			47.7		31.8	20.5
93	Portland State University	21370	⬇ 9	⬇ 3	⬇ 2		19.0	22.0	47.6	11.4
94	Team Norway	20943	⬆ 6	⬆ 3	⬆ 2	⬆ 1	84.3			2.4	12.2	1.2
95	Team Retired	20932	⬆ 3			⬇ 1			26.5	10.1
96	Quantus	20428	⬇ 2	⬇ 9	⬇ 3		12.7		30.3	26.0		30.9
97	SpartaAlumni	19487	⬇ 6	⬇ 1	⬇ 3	⬆ 1			68.8	31.2
98	Team Slovenia	19165	⬇ 10	⬇ 10	⬇ 1	⬇ 1			72.6	27.4
99	Ozzie Prime	19164	⬇ 9	⬇ 6	⬇ 1			4.4	68.8	12.8		14.0
100	A Single Engineer	18558	⬇ 1	⬇ 2	⬆ 1				78.8	21.2
101	PrimitiveRootsCircle	18203	⬆ 9	⬇ 1	⬆ 1		36.2		38.8	22.5	2.6
102	Politeknik Banting, Selangor	17564	⬇ 22	⬇ 10	⬇ 3		81.7		4.5	13.8
103	GIMPS.Taiwan	17018	⬇ 6	⬇ 4	⬇ 3				91.0	8.8
104	Channel 4	16587	⬇ 21	⬆ 1	⬇ 1				87.4	12.6
105	Nerdfighters for Mersenne Primes	16231	⬇ 2	⬇ 2	⬇ 1		2.9		80.8	16.3
106	The Fellowship of Infinity	15575	⬆ 46	⬆ 6	⬆ 2				99.5	0.5
107	GIMPS.Portugal	14620	⬇ 1	⬇ 1			0.1	71.6		28.3
108	Granada	14274	⬇ 1	⬇ 4	⬆ 1	⬆ 1	34.1		5.4	60.0
109	moeses	14218	⬆ 2	⬇ 1	⬆ 2	⬇ 1			99.4	0.6
110	MurrayInfoSys	13831	⬆ 13	⬆ 6	⬆ 2				62.4	37.6
111	Hyperion	13775	⬆ 1	⬇ 2	⬇ 1				1.9	29.8
112	youngfun429	13570	⬇ 3	⬇ 10	⬇ 6				57.1	42.9
113	MES22-Team	13207	⬇ 17	⬇ 12	⬇ 8		100.0
114	SETI.Germany	12708	⬆ 2	⬇ 3	⬇ 1			7.5	24.9	67.6
115	ᕙ(⇀‸↼‶)ᕗ	12618	⬆ 35	⬆ 13	⬆ 1				99.5	0.5
116	Die Zeitfinder	11543	⬇ 3	⬇ 6	⬇ 2				100.0
117	FreeBSD	10955	⬇ 13	⬇ 10	⬇ 2		22.3		68.9	8.8
118	Mensa	10750	⬇ 1	⬇ 1					65.3	34.7
119	Royal Military College of Canada	10691	⬆ 122	⬆ 2			89.7		7.9	2.4
120	VIPR	10530	⬇ 1	⬇ 5	⬇ 3				74.1	25.8
121	Abacus	10324	⬆ 6	⬆ 1	⬇ 1				92.1	7.9
122	nmbarek_team	9947	⬇ 2	⬇ 2					99.8	0.2
123	TurkishMath	9327	⬇ 2	⬇ 4	⬇ 2				91.8	8.2
124	Syntony	9241	⬆ 4		⬆ 1					100.0
125	JiBoTeam	9142	⬆ 1	⬆ 6	⬆ 2					100.0
126	Shaffer's Studio	8967	⬆ 3	⬇ 1					86.1	13.8
127	Triangle	8792	⬇ 12	⬇ 4	⬇ 4				96.3	3.7
128	Server66	8528	⬇ 3	⬆ 1	⬆ 1		100.0
129	Turku	8486	⬇ 34	⬇ 16	⬇ 5				100.0
130	irowiki	8045	⬇ 6	⬇ 3						100.0
131	Furry Primes	8022	⬆ 5	⬆ 1			58.8		27.1	14.1
132	Aiblspitz	7672	⬆ 9	⬆ 3			2.2	58.3	20.6	16.8	2.2
133	Team Splunk	7605	⬆ 2	⬆ 1				28.1	71.9
134	Brasil	7113	⬇ 2	⬇ 1	⬇ 6				76.6	23.3
135	WSU Cougars	6864	⬆ 4	⬆ 3		⬆ 1			56.6	43.3
136	SU Prime Pirates	6437	⬆ 6	⬆ 6	⬆ 1	⬆ 1			61.5	38.5
137	International School of Beijing (ISB)	6436	⬇ 6	⬆ 6	⬆ 1	⬆ 1			99.7	0.3
138	University of Waterloo	6259	⬆ 15	⬇ 1	⬇ 4	⬇ 3			100.0
139	Team Christensen	6190	⬆ 1	⬆ 5	⬆ 1					100.0
140	Prime Rib	6066	⬇ 26	⬇ 1	⬇ 4				96.8	3.1
141	Elisabeth-von-Thadden-Schule	6033	⬆ 6	⬆ 7					38.4	61.6
142	teamMALI	5797	⬆ 4	⬆ 7	⬆ 1				86.9	13.1
143	The_Dude_Abides	5752	⬇ 25	⬇ 3	⬇ 1		34.3			56.4
144	GIMPS Romania	5527	⬇ 1	⬆ 2	⬆ 1				100.0
145	Black Mesa	5511	⬇ 37	⬇ 19	⬇ 6				88.4	11.6
146	Optimists Prime	5374	⬇ 2	⬆ 1	⬆ 1			54.9	41.1	4.0
147	Com Systems (RU)	5366	⬆ 94	⬆ 14	⬆ 1				57.9	42.1
148	zeit	5314	⬇ 14	⬇ 7	⬇ 4		3.2			96.8
149	3DCenter.org	5210	⬇ 12	⬇ 4	⬇ 3						100.0
150	NUST	4862	⬆ 91	⬆ 55	⬆ 11	⬆ 1	15.5	75.7		8.7
151	Danpi for GIMPS	4710		⬇ 1	⬇ 2	⬇ 1	100.0
152	ANDY	4448	⬆ 3		⬇ 2				99.3	0.6
153	The East Coast	4426	⬇ 51	⬇ 17	⬇ 2		99.3	0.7
154	Hong Kong GIMP	4419	⬆ 9		⬇ 2				70.6	29.4
155	Kabylie	4383	⬆ 5		⬇ 2		15.0	4.6	35.5	44.8	0.1
156	Olympic College	4382	⬆ 2		⬇ 2					100.0
157	GIMPS.Hong Kong	4032	⬇ 1	⬆ 2	⬇ 2		3.1		57.6	39.2
158	NanJing Tech	3964	⬆ 83	⬆ 80	⬆ 76				99.9	0.1
159	TunisianTeam	3609	⬇ 11	⬇ 2	⬇ 3				21.4	78.6
160	I Love Canadian Natural Resources	3472	⬆ 10		⬇ 2					100.0
161	Phi Kappa Theta	3342	⬆ 13	⬆ 7	⬇ 2				70.6	29.4
162	Artists of Fine Art	3291	⬇ 32	⬇ 11	⬇ 5				93.0	7.0
163	alan145	3202	⬇ 2	⬇ 5	⬇ 3		81.4	2.4		0.2	15.9
164	Zorin OS Crew	3201	⬇ 10	⬇ 2	⬇ 2				70.1	29.9
165	Team_Brazil	2999	⬆ 3		⬇ 2		83.1	0.2		16.7
166	Saudi Primes	2864	⬆ 3	⬆ 1	⬇ 2					100.0
167	EggCelentes	2574	⬆ 5	⬆ 3	⬇ 2				42.1	57.9
168	Subprime Searches	2375	⬇ 11	⬆ 3	⬇ 2		100.0
169	VRS_SE	2359	⬆ 17	⬆ 3	⬇ 2				66.8	33.2
170	UCLA Linux Users Group	2303	⬇ 21	⬇ 7	⬇ 1				100.0
171	His Dark Materials	2165	⬇ 9	⬇ 2	⬇ 1					49.5	50.5
172	Noam Karni Team	2105	⬆ 49	⬆ 18	⬆ 15	⬆ 15			75.1	24.9
173	BrainStone	2093	⬇ 6	⬇ 9	⬇ 1	⬇ 1				100.0
174	Korea.Prime	2075	⬆ 67	⬆ 17	⬆ 15	⬇ 1			75.3	24.7
175	The Pensis	1869	⬆ 2		⬇ 2	⬇ 1				100.0
176	F=dp/dt	1845	⬆ 2		⬇ 2	⬇ 1			85.8	14.2
177	Obsidian	1821	⬆ 2	⬆ 4	⬆ 2	⬇ 1				100.0
178	GIMPS_IOM	1712	⬆ 3		⬇ 3	⬇ 1	100.0
179	Crunching@EVGA	1668	⬆ 62	⬆ 59	⬇ 3	⬇ 1			100.0
180	RobotechResearch	1594	⬆ 61	⬇ 1	⬇ 3	⬇ 1			100.0
181	San Francisco	1586	⬆ 4	⬇ 1	⬇ 3	⬇ 1			100.0
182	TimE4This	1481	⬇ 7	⬆ 4		⬇ 1				100.0
183	FactorMania	1474	⬆ 58	⬆ 45	⬆ 7	⬇ 1		67.5			32.5
184	OcUK - Overclockers UK	1409	⬇ 11	⬆ 3	⬇ 1	⬇ 1			100.0
185	Primos Brazucas	1397	⬇ 19	⬇ 19	⬇ 1	⬇ 1			100.0
186	Happy	1341	⬇ 6	⬆ 2	⬇ 1	⬇ 1					99.9
187	México mágico	1304	⬆ 31	⬇ 3	⬆ 1	⬆ 1			60.3	39.7
188	GIMPSMalaysia	1261	⬆ 53	⬆ 25	⬆ 3	⬆ 1			63.1	36.8
189	The Prime Pioneers	1095	⬆ 3	⬆ 7	⬆ 3	⬆ 1	27.7	36.6		23.2	12.3
190	Math_Lovers	1039	⬇ 2	⬇ 1	⬇ 4	⬇ 4				100.0
191	Manri Costa Rica	984	⬇ 26	⬇ 14	⬆ 2				77.7	22.3
192	GIMPS Asturias	794	⬆ 3	⬆ 5	⬆ 3	⬆ 1			99.6	0.4
193	Weatopians	793	⬆ 4	⬆ 5	⬆ 3	⬆ 1			99.7	0.3
194	Sæve Nordic Prime	792	⬆ 2	⬆ 5	⬆ 3	⬆ 1			98.6
195	University of California, Santa Barbara	777	⬇ 24	⬇ 12	⬇ 1	⬇ 3			100.0
196	crazyBerlin	777	⬇ 58	⬇ 14	⬆ 2				99.6	0.4
197	hreid	776	⬆ 3	⬇ 12	⬇ 16				100.0
198	ISISS Valle Seriana	774	⬇ 11	⬆ 2	⬆ 1				97.8	2.1
199	Team Arizona	771	⬇ 35	⬇ 25	⬇ 28				100.0
200	NuggetFarms	764	⬇ 41	⬇ 27	⬇ 20				100.0
201	Czech National Team	730	⬇ 56	⬇ 48	⬇ 33		5.1			90.9	2.5
202	SGDynamo Dresden	611	⬆ 4		⬇ 1		100.0
203	Team Bulgaria	579	⬆ 1		⬇ 1					36.7	63.2
204	Unteranger Primelurche	576	⬆ 4		⬇ 1					100.0
205	GIMPS_KS	554	⬆ 36	⬆ 28	⬇ 1					94.5	5.5
206	TeamEc	552	⬆ 3		⬇ 1					75.6	24.4
207	PrimeObsession	527	⬆ 34	⬆ 31	⬆ 27					100.0
208	Team Dominik Radler	520	⬇ 1	⬇ 1	⬇ 2		100.0
209	math.auth.gr	518	⬆ 4	⬇ 1	⬇ 2					100.0
210	Join Us 😈	517	⬆ 4	⬇ 1	⬇ 2		100.0
211	Prime-UAE	502	⬇ 29	⬇ 1	⬇ 2					100.0
212	Name (t) = A x e^kt	483	⬆ 4	⬇ 1	⬇ 2					100.0
213	London Computation Club	478	⬆ 4	⬇ 1	⬇ 2					100.0
214	Team Ribbs	336	⬇ 15		⬇ 2					100.0
215	KnightLight	315	⬆ 4		⬇ 2					99.3
216	www.Adamek.biz	265	⬆ 4	⬆ 1		⬆ 1				100.0
217	Math Teachers of the World	259	⬇ 2	⬆ 1		⬆ 1			100.0
218	GIMPS Hams	253	⬆ 4	⬆ 1		⬆ 1		100.0
219	The Goodest Team	253	⬆ 4	⬆ 1		⬆ 1				100.0
220	Lithuania LT	247	⬇ 19	⬆ 1		⬆ 1				100.0
221	yfinder	208	⬆ 5	⬆ 1		⬆ 1				100.0
222	30thousandwon	193	⬇ 24	⬆ 1		⬆ 1				100.0
223	DividerHunt	190	⬆ 18	⬆ 2		⬆ 1	100.0
224	/r/counting	175	⬆ 7	⬆ 3	⬆ 1	⬆ 1
225	TeamUbuntu	121	⬆ 7	⬆ 5	⬆ 2	⬆ 1				100.0
226	GIMPS.Peace	109	⬆ 15	⬆ 5	⬆ 2	⬆ 1	50.0	50.0
227	FourthFloorFourEyes	46	⬇ 34	⬆ 5	⬆ 2	⬆ 1	100.0
228	PROMYS	23	⬆ 6	⬆ 6	⬆ 2	⬆ 1					100.0
229	ALGERIA	16	⬆ 8	⬆ 7	⬆ 3	⬆ 1					100.0
230	sannerud.com	10	⬆ 5	⬆ 5	⬆ 1	⬆ 1					100.0
231	Team Ireland	3	⬇ 47	⬇ 38	⬇ 17	⬇ 15				98.7
232	CZAsTc	3	⬆ 8	⬆ 5	⬆ 1					95.0