List of champions for factoring Cunningham numbers:

Special number field sieve by size of number factored:
3980	C167	3,349-	NFSNET
4038	C164	10,166+	NFSNET

Special number field sieve by SNFS difficulty:
3929	C142	10,167-	NFSNET
3980	C167	3,349-	NFSNET

Hybrid Special/General number field sieve by size of number factored:
4036	C121	2,1650L	CWI
4021	C118	2,1095+	CWI

General number field sieve by size of number factored:
3663	C105	3,367-	FactOregon/CWI

	First five holes in each table on July 30, 1997:

2,569-	c128	2,571-	c164	2,581-	c125	2,589-	c148	2,593-	c153
2,569+	c144	2,587+	c151	2,589+	c150	2,611+	c123	2,613+	c185
2,1006L	c134	2,1042M	c141	2,1058L	c153	2,1066M	c145	2,1094L	c139
2,556+	c134	2,568+	c120	2,592+	c174	2,608+	c149	2,628+	c141

3,373-	c178	3,379-	c155	3,389-	c168	3,397-	c178	3,401-	c192
3,347+	c162	3,349+	c144	3,353+	c146	3,356+	c153	3,358+	c155

5,247-	c147	5,299-	c171	5,565M	c147	5,575M	c122	5,595M	c135
5,239+	c147	5,242+	c150	5,248+	c156	5,251+	c165	5,254+	c121

6,221-	c139	6,227-	c150	6,241-	c122	6,251-	c157	6,253-	c153
6,218+	c130	6,224+	c137	6,226+	c148	6,227+	c127	6,230+	c132

7,199-	c132	7,211-	c173	7,227-	c192	7,233-	c155	7,235-	c156
7,193+	c139	7,208+	c155	7,211+	c170	7,214+	c150	7,223+	c184

10,169-	c152	10,173-	c154	10,187-	c152	10,197-	c169	10,211-	c211
10,167+	c118	10,169+	c145	10,172+	c168	10,181+	c158	10,182+	c133

11,167-	c128	11,169-	c151	11,187-	c143	11,191-	c193	11,197-	c152
11,166+	c129	11,167+	c164	11,172+	c130	11,175+	c120	11,181+	c155

12,149-	c156	12,163-	c120	12,173-	c152	12,179-	c190	12,181-	c190
12,151+	c128	12,163+	c132	12,167+	c180	12,169+	c132	12,172+	c169


		Ten Most Wanted:

1.	2,571-	C164		6.	10,169-	C152
2.	2,556+	C134		7.	10,167+	C118
3.	2,569+	C144		8.	7,193+	C139
4.	3,347+	C162		9.	12,149-	C156
5.	5,239+	C147		10.	6,256+	C195

		Twenty-Four More Wanted:

2,581-	C125		5,247-	C147		6,224+	C137
2,587+	C151		5,242+	C150		7,208+	C155
2,1006L	C134		5,248+	C156		10,173-	C154
2,1042M	C141		5,251+	C165		10,187-	C152
2,1058L	C153		5,254+	C121		10,197-	C169
2,1066M	C145		5,257+	C174		10,169+	C145
2,568+	C120		6,221-	C139		10,172+	C168
3,349+	C144		6,218+	C130		12,151+	C128