PRP Top - Top discoverers

Top discoverers by number of PRPs

Rank	Discoverer	Score
1	Tony Prest / Never Odd Or Even	103856
2	Stefano Morozzi	37811
3	Lelio R Paula	31241
4	Patrick De Geest	21223
5	Enzo Doria	14574
6	Syoichiro Yamada	13745
7	Robert Price	12513
8	Paul Bourdelais	8894
9	Ray Chandler	8631
10	David Broadhurst	7813
11	Gilbert Mozzo	4720
12	Milton L. Brown	3224
13	Donovan Johnson	3116
14	Serge Batalov	3028
15	Kimmo Herranen	2745
16	Norbert Schneider	2560
17	Mike Oakes	2437
18	Yves Minet	2220
19	Hans Havermann	1604
20	Bernardo Boncompagni	1489
21	Henri Lifchitz	1204
22	Andrey Kulsha	801
23	Frank Doornink	796
24	Jorge Menendez	702
25	Wayne Halsdorf	674
26	Makoto Morimoto	627
27	Jason Earls	614
28	Joe McLean	594
29	Jim Fougeron	580
30	Jens K. Andersen	573
31	Anatoly F. Selevich	475
32	Kenneth Egtved Pedersen	422
33	Robert Smith	374
34	Paul Underwood	336
35	Erik Branger	331
36	Eric Chen	318
37	Tyler Busby	275
38	Maksym Voznyy	271
39	Alfred Reich	263
40	Richard Fischer	232
41	Gary Barnes	170
42	Gary Chaffey	162
43	Ryan C Weaving	158
44	Ryan Propper	151
45	Anonymous	137
46	Jon Grantham	129
47	Markus Hiltbrunner	123
48	Kevin Acres	109
49	Paul Vanderveen	100
50	Michael Porter	99
51	Harald Ritter	94
52	Matt Stath	93
52	Jean-Louis Charton	93
54	Jiahao He	91
55	Daniel Heuer	80
56	T. D. Noe	79
57	Sinkiti Sibata	71
57	Paul Leyland	71
59	Dmitry Domanov	68
60	Curtis Bright	61
61	Eric W. Weisstein	58
62	Norman Luhn	57
63	Sander Hoogendoorn	54
63	Pedja Terzic	54
65	D.Broadhurst and W.Edgington	53
66	Michael Vang	52
67	Sujan Das	50
68	Renaud Lifchitz	49
69	Makoto Kamada	48
70	Theodore Burton	45
71	Arkadiusz Wesolowski	44
71	Mark Rodenkirch	44
73	Nicolas PALAU	43
74	Patrick Schmeer	39
75	Riley Fisher	37
76	Thomas Masser	36
77	Cletus Emmanuel	30
78	Harvey Dubner	27
78	Faysal YAtim	27
78	Kellen Shenton	27
81	Youcef Lemsafer	25
82	Greg Childers	24
83	Paul Schmidt	23
84	Wojciech Florek	22
84	Jinyuan Wang	22
84	Martin Hopf	22
87	Aurel Gibier	20
87	Danilo Nitsche	20
89	Rob Binnekamp	19
89	Boyan Hu	19
89	Gord Palameta	19
89	Joel Levy	19
93	Gabor Levai	18
93	Predrag Minovic	18
93	Ken Davis	18
96	Robert Kinser	17
96	Bouk de Water	17
98	Rytis Slatkevicius	16
99	Harrison Mesh	15
100	Alex_soldier	14
101	Poliagapitos	13
101	Thomas Ritschel	13
101	Tom Wu	13
104	Alexander Zhirkov	12
105	Nik Lygeros / Olivier Rozier	11
105	Ryan Propper + Sergey Batalov	11
107	Raffi Chaglassian	10
107	Michael Stocker	10
107	Sergey Batalov	10
107	Hayden Chesnut	10
107	Marcin Lipinski	10
112	Kamil Duszenko	9
112	Darren Bedwell	9
112	Dario Alpern	9
112	Tyler NeSmith	9
112	D. Broadhurst & B. de Water	9
112	Alexander Kuzmich	9
118	M. Frind & P. Underwood	8
118	Leonid Muraviov	8
118	Yaroslav Berezhko	8
118	Walter Nissen	8
118	Nik Lygeros / Olivier Rozier / LR team	8
118	Anton Vrba	8
124	James G. Merickel	7
124	Jean Penné	7
124	H.&R. Lifchitz	7
124	Karsten Bonath	7
128	Dirk Augustin	6
128	Mischa Rodermond	6
128	Jason Yuen	6
131	Pierre CAMI	5
131	Payam Samidoost	5
131	Harsh Aggarwal	5
131	Borys Jaworski	5
131	Miklos Levai	5
131	Marisa Kirisame	5
137	Marek Hubal	4
137	Jeppe Stig Nielsen	4
137	Anand Nair	4
137	V.M.Ulyanov	4
137	Dylan Delgado	4
137	Décio Gazzoni Filho	4
143	Jiong Sun	3
143	Giovanni Di Maria	3
143	Phil Moore	3
143	D. Gazzoni Filho & Lucas Teixeira	3
143	Alexander Gramolin	3
143	Richard McIntosh	3
143	Paul Jobling	3
143	Matthias Baur	3
143	Meng-Hsuan Wu	3
143	Hugo Platzer	3
143	Akihiko Yoshida	3
143	Alexander Weiss	3
143	Ben Maloney / Five or Bust	3
156	Ray Ballinger	2
156	Andy Klingeleers	2
156	Ed Pegg	2
156	Lewis,Jobling,Nash	2
156	Leonid Durman	2
156	Dmitry Kamenetsky	2
156	Rubén Blanco	2
156	Peter Lesala	2
156	Engracio Esmenda / Five or Bust	2
156	Steven Harvey	2
156	Valeryi Kuryshev	2
156	Michael Kwok	2
156	Andy Steward	2
156	Markus Tervooren	2
156	Ananda Tallur & Jean-Louis Charton	2
156	J. Alm & D. Johnson	2
156	Peter Liaskovsky	2
173	Tetsuya Kobayashi	1
173	Vincent Diepeveen	1
173	Yusuf AttarBashi	1
173	Sean A. Irvine	1
173	Tony Reix / Diepeveen-Underwood -Reix	1
173	William Garnett	1
173	Tapashree & Jainam	1
173	Lew Baxter	1
173	Guido Smetrijns	1
173	Giovanni La Barbera	1
173	GIMPS-fre_games	1
173	Göran Hemdal	1
173	Hugo Pfoertner	1
173	Jorge Coveiro	1
173	Jeff Gilchrist /Diepeveen-Reix-Underwood-Gilchrist	1
173	Eden Avidan / Naegi Makoto	1
173	Ed Trice	1
173	Cyclamen Persicum	1
173	Connor Deptuck	1
173	D.Broadhurst and M.Kamada	1
173	D.Broadhurst and N.Mandela	1
173	Ed T. Prothro	1
173	Dudley Fox	1
173	Kurt Beschorner	1
173	Leonardo Ottaviano	1
173	Paul Bourdelais, Harvey Dubner	1
173	paolo galliani	1
173	Oliver Kruse	1
173	Peter Kaiser	1
173	Phil Carmody	1
173	Polly T. Wang	1
173	Platon Sovilj	1
173	Nuutti Kuosa	1
173	MohamedReda Kebbaj	1
173	Logan Mesh	1
173	Adrian Bondrescu	1
173	Luke W. Richards	1
173	Matthew Peets	1
173	Michael Eaton	1
173	Matthias Wurtinger	1
173	Richard FitzHugh	1

Top discoverers by production score^*

Rank	Discoverer	Score
1	Ryan Propper + Sergey Batalov	53.4706
2	Ryan Propper	53.1039
3	Paul Bourdelais	51.8822
4	Anonymous	51.1974
5	Jeff Gilchrist /Diepeveen-Reix-Underwood-Gilchrist	50.9036
6	Enzo Doria	50.8282
7	Eden Avidan / Naegi Makoto	50.7167
8	Tony Prest / Never Odd Or Even	50.4677
9	GIMPS-fre_games	50.1446
10	Stefano Morozzi	50.0344
11	Engracio Esmenda / Five or Bust	49.8812
12	Gord Palameta	49.3233
13	Oliver Kruse	49.0532
14	Robert Price	48.7641
15	Serge Batalov	48.7541
16	Gabor Levai	48.7538
17	Hans Havermann	48.5131
18	Jon Grantham	48.0806
19	Ben Maloney / Five or Bust	47.7568
20	Henri Lifchitz	47.7069
21	Alfred Reich	47.6645
22	Kellen Shenton	47.6574
23	Lelio R Paula	47.4747
24	Patrick De Geest	47.3257
25	Tony Reix / Diepeveen-Underwood -Reix	47.2269
26	Rytis Slatkevicius	47.1256
27	Curtis Bright	47.1095
28	Nik Lygeros / Olivier Rozier / LR team	47.1065
29	Anand Nair	47.0205
30	Sergey Batalov	46.8860
31	Makoto Morimoto	46.7970
32	Boyan Hu	46.6961
33	Peter Kaiser	46.6330
34	Nik Lygeros / Olivier Rozier	46.5672
35	Jean-Louis Charton	46.4485
36	Frank Doornink	46.4288
37	Norbert Schneider	46.3441
38	Miklos Levai	46.1482
39	Alexander Zhirkov	46.0960
40	Yves Minet	45.9529
41	Eric Chen	45.8556
42	Borys Jaworski	45.7963
43	Mike Oakes	45.4811
44	Mischa Rodermond	45.2614
45	Paul Vanderveen	45.2394
46	Michael Stocker	45.1413
47	Adrian Bondrescu	45.1328
48	Dario Alpern	44.9364
49	Jorge Coveiro	44.8701
50	Tyler Busby	44.8204
51	Norman Luhn	44.6606
52	Leonid Durman	44.5445
53	Erik Branger	44.5434
54	Jorge Menendez	44.1576
55	Maksym Voznyy	44.0643
56	Phil Moore	43.9356
57	Renaud Lifchitz	43.9182
58	Jinyuan Wang	43.8729
59	Ray Chandler	43.7713
60	Yusuf AttarBashi	43.7152
61	Youcef Lemsafer	43.6970
62	Anatoly F. Selevich	43.6366
63	Danilo Nitsche	43.4553
64	Matthias Wurtinger	43.4236
65	Makoto Kamada	43.3220
66	Syoichiro Yamada	43.3093
67	paolo galliani	43.1908
68	Donovan Johnson	43.1363
69	Eric W. Weisstein	43.1286
70	Aurel Gibier	43.0939
71	Riley Fisher	42.9474
72	Ed Trice	42.9402
73	Mark Rodenkirch	42.9159
74	Vincent Diepeveen	42.9031
75	Martin Hopf	42.7818
76	Robert Smith	42.7237
77	Richard Fischer	42.6759
78	Thomas Ritschel	42.5917
79	Robert Kinser	42.5587
80	Alex_soldier	42.5456
81	Jens K. Andersen	42.4271
82	Milton L. Brown	42.4230
83	Gilbert Mozzo	42.3829
84	Luke W. Richards	42.2565
85	Jason Yuen	42.2563
86	Markus Tervooren	42.2013
87	Harrison Mesh	42.1987
88	Tom Wu	42.1899
89	Hayden Chesnut	42.1843
90	Kevin Acres	42.1267
91	Tyler NeSmith	42.1057
92	Alexander Gramolin	42.0680
93	Andy Steward	42.0678
94	Dmitry Domanov	41.9615
95	David Broadhurst	41.9510
96	Akihiko Yoshida	41.9008
97	Wayne Halsdorf	41.8768
98	Theodore Burton	41.8735
99	Matt Stath	41.8125
100	Kimmo Herranen	41.7829
101	Karsten Bonath	41.7119
102	Harsh Aggarwal	41.6996
103	Nicolas PALAU	41.6474
104	Sujan Das	41.5708
105	Matthias Baur	41.5055
106	Michael Vang	41.5045
107	Joe McLean	41.4510
108	Jason Earls	41.4443
109	Cletus Emmanuel	41.3699
110	Paul Underwood	41.2942
111	Faysal YAtim	41.2683
112	Valeryi Kuryshev	41.2673
113	Gary Barnes	41.2070
114	Dylan Delgado	41.1947
115	Andrey Kulsha	41.1560
116	Payam Samidoost	41.1236
117	Yaroslav Berezhko	41.1054
118	Jean Penné	41.0866
119	M. Frind & P. Underwood	41.0735
120	T. D. Noe	41.0112
121	Pedja Terzic	40.9033
122	Michael Porter	40.7420
123	Bernardo Boncompagni	40.6902
124	Darren Bedwell	40.5716
125	Alexander Weiss	40.5545
126	H.&R. Lifchitz	40.5526
127	Marek Hubal	40.5299
128	Poliagapitos	40.3648
129	Jiahao He	40.2751
130	Jeppe Stig Nielsen	40.1663
131	Arkadiusz Wesolowski	40.0345
132	Marisa Kirisame	40.0015
133	Jim Fougeron	39.9920
134	Daniel Heuer	39.8964
135	Paul Bourdelais, Harvey Dubner	39.8282
136	Sander Hoogendoorn	39.8108
137	D. Gazzoni Filho & Lucas Teixeira	39.6113
138	Predrag Minovic	39.5972
139	Wojciech Florek	39.5962
140	Ryan C Weaving	39.5308
141	Sinkiti Sibata	39.4834
142	Kurt Beschorner	39.3559
143	Dirk Augustin	39.2949
144	Logan Mesh	39.2542
145	Kenneth Egtved Pedersen	39.1165
146	Lew Baxter	39.1057
147	Tapashree & Jainam	38.8360
148	Harald Ritter	38.8053
149	Patrick Schmeer	38.6236
150	Ananda Tallur & Jean-Louis Charton	38.5718
151	Walter Nissen	38.4704
152	James G. Merickel	38.4559
153	Gary Chaffey	38.4469
154	Thomas Masser	38.4129
155	Décio Gazzoni Filho	38.3716
156	D.Broadhurst and W.Edgington	38.3693
157	Peter Lesala	38.2364
158	Pierre CAMI	38.1880
159	Phil Carmody	38.0649
160	Jiong Sun	38.0187
161	Platon Sovilj	37.8224
162	Bouk de Water	37.7897
163	Kamil Duszenko	37.7572
164	Harvey Dubner	37.7421
165	Paul Leyland	37.7267
166	Connor Deptuck	37.7091
167	Markus Hiltbrunner	37.5011
168	Joel Levy	37.4885
169	Leonardo Ottaviano	37.4341
170	Meng-Hsuan Wu	37.2670
171	Greg Childers	37.2465
172	Raffi Chaglassian	37.1068
173	Marcin Lipinski	37.0378
174	Richard McIntosh	37.0213
175	Rob Binnekamp	36.9534
176	Paul Jobling	36.8410
177	Lewis,Jobling,Nash	36.6013
178	Ken Davis	36.4213
179	Rubén Blanco	36.3081
180	MohamedReda Kebbaj	36.2809
181	D.Broadhurst and N.Mandela	36.2365
182	D.Broadhurst and M.Kamada	36.2230
183	D. Broadhurst & B. de Water	36.2010
184	Steven Harvey	36.0407
185	Alexander Kuzmich	35.8876
186	Paul Schmidt	35.8030
187	Anton Vrba	35.6914
188	Dudley Fox	35.5339
189	William Garnett	35.2932
190	Peter Liaskovsky	35.1846
191	Ray Ballinger	35.1526
192	Dmitry Kamenetsky	34.9327
193	Matthew Peets	34.8243
194	Hugo Platzer	34.7951
195	V.M.Ulyanov	34.7788
196	Leonid Muraviov	34.7753
197	Giovanni Di Maria	34.5567
198	Cyclamen Persicum	34.5441
199	Ed Pegg	34.4014
200	Richard FitzHugh	34.1466
201	Michael Kwok	34.1355
202	Sean A. Irvine	34.0515
203	Ed T. Prothro	33.9358
204	Andy Klingeleers	33.8707
205	Nuutti Kuosa	33.7910
206	Michael Eaton	33.7691
207	Tetsuya Kobayashi	33.6073
208	J. Alm & D. Johnson	33.5636
209	Göran Hemdal	33.2857
210	Hugo Pfoertner	33.2269
211	Giovanni La Barbera	33.1670
212	Polly T. Wang	32.8241
213	Guido Smetrijns	32.7635

^* : See the "Prime Pages" by Chris K. Caldwell for explanations about the production score used.

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Created by Henri Lifchitz & Renaud Lifchitz : October, 26 2000, last modification: July, 15 2025 20:38 (Time in France)

PRP Top - Top discoverers

Top discoverers by number of PRPs

Top discoverers by production score*

Top discoverers by production score^*