List of recent champions for factoring Cunningham numbers:

Special number field sieve by size of number factored:
6132	C320	2,1061-	NFS@Home
5501	C307	2,1039-	K.Aoki+J.Franke+T.Kleinjung+A.K.Lenstra+D.A.Osvik

Special number field sieve by SNFS difficulty:
6132	C320	2,1061-	NFS@Home
6174	C218	2,1049+	NFS@Home

General number field sieve by size of number factored:
6216	C212	10,770M	NFS@Home
6196	C207	3,706+	NFS@Home
6178	C202	3,745+	NFS@Home

Elliptic curve method:
6208	P83	7,337+	R. Propper
6135	P79	11,306+	S. Wagstaff

Largest penultimate prime factor (ultimate factor shown also):
6132	p143*p177 2,1061-   NFS@Home
6116	p133*p139 5,433+    NFS@Home

	First five holes in each table on January 21, 2014

2,991-	c264	2,1081-	c251	2,1093-	c294	2,1109-	c301	2,1111-	c278
2,947+	c212	2,983+	c236	2,989+	c249	2,991+	c224	2,1009+	c244
2,1894M	c227	2,1898L	c219	2,1898M	c257	2,1906M	c274	2,1934M	c225
2,1028+	c241	2,1052+	c300	2,1072+	c271	2,1076+	c238	2,1084+	c318

3,617-	c277	3,619-	c207	3,653-	c289	3,655-	c215	3,661-	c316
3,604+	c248	3,617+	c234	3,619+	c272	3,631+	c219	3,632+	c220

5,419-	c224	5,431-	c266	5,449-	c271	5,473-	c268	5,481-	c302
5,419+	c236	5,421+	c180	5,422+	c235	5,424+	c282	5,431+	c292

6,383-	c264	6,391-	c274	6,401-	c274	6,407-	c241	6,421-	c281
6,376+	c224	6,389+	c242	6,391+	c260	6,394+	c273	6,397+	c297

7,353-	c263	7,359-	c224	7,361-	c290	7,367-	c252	7,373-	c267
7,346+	c251	7,353+	c241	7,356+	c207	7,359+	c278	7,367+	c301

10,323-	c271	10,337-	c268	10,341-	c226	10,343-	c238	10,353-	c328
10,292+	c198	10,298+	c267	10,302+	c289	10,304+	c282	10,311+	c223

11,283-	c268	11,293-	c300	11,299-	c212	11,307-	c289	11,311-	c323
11,283+	c258	11,292+	c259	11,293+	c212	11,298+ c243	11,299+	c245

12,269-	c205	12,271-	c234	12,277-	c285	12,281-	c235	12,283-	c244
12,271+	c250	12,274+	c213	12,283+	c194	12,284+	c252	12,289+	c265