List of recent champions for factoring Cunningham numbers:

Special number field sieve by size of number factored:
5501	c307	2,1039-	K.Aoki+J.Franke+T.Kleinjung+A.K.Lenstra+D.A.Osvik
5811	C280	2,941-	mersenneforum+NFS@Home+Dodson+Womack

Special number field sieve by SNFS difficulty:
5501	c307	2,1039-	K.Aoki+J.Franke+T.Kleinjung+A.K.Lenstra+D.A.Osvik
5811	C280	2,941-	mersenneforum+NFS@Home+Dodson+Womack

General number field sieve by size of number factored:
5852	C192	2,1175-	J.Bos+T.Kleinjung
5723	C182	2,1157-	J.Bos+T.Kleinjung
5827	C180	2,2254L	Batalov+Dodson

Elliptic curve method:
5858	P73	2,1181-	J.Bos+T.Kleinjung+A.K.Lenstra+P.Montgomery
5418	P67	10,381+	B. Dodson ECMNET
5135	P66	3,466+	B. Dodson ECMNET

Largest penultimate prime factor (ultimate factor shown also):
5714	p128*p140 5,383+    Childers/Dodson
5654	p127*p136 6,392+    Childers/Dodson

	First five holes in each table on March 7, 2010

2,899-	c185	2,919-	c261	2,929-	c214	2,937-	C212	2,947-	c217
2,881+	c190	2,947+	c212	2,955+	c214	2,961+	c221	2,979+	c255
2,1718L	c233	2,1718M	c200	2,1754M	c180	2,1762L	c249	2,1762M	c234
2,904+	c210	2,932+	c200	2,956+	c187	2,964+	c198	2,988+	c212

3,563-	c199	3,569-	c231	3,589-	c213	3,593-	c214
3,562+	c255	3,563+	c239	3,568+	c268	3,575+	c196	3,580+	c204

5,383-	c183	5,389-	c231	5,397-	c258	5,409-	c282	5,419-	c224
5,382+	c172	5,386+	c223	5,394+	c265	5,397+	c270	5,400+	c205

6,349-	c209	6,365-	c185	6,373-	c287	6,377-	c249	6,383-	c264
6,346+	c241	6,347+	c196	6,353+	c178	6,355+	c211	6,359+	c234

7,323-	c241	7,335-	c219	7,337-	c213	7,353-	c263	7,359-	c277
7,314+	c215	7,323+	c229	7,326+	c258	7,331+	c253	7,332+	c199

10,271-	c214	10,277-	c224	10,281-	c210	10,283-	c211	10,293-	c218
10,272+	c212	10,274+	c253	10,275+	c188	10,277+	c259	10,281+	c242

11,257-	c226	11,263-	c209	11,265-	c202	11,269-	c233	11,271-	c221
11,254+	c228	11,263+	c252	11,269+	c202	11,271+	c267	11,272+	c201

12,257-	c218	12,269-	c205	12,271-	c234	12,277-	c285	12,281-	c294
12,254+	c230	12,265+	c185	12,271+	c250	12,274+	c213	12,283+	c194