11 633 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
67657529	8	26.0	old
226037821687	12	37.7	2008-08-26 19:58:35

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	2124 / 9201

Estimated T-Level: 41.2 ⓘ

TF below 2^132 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	FBB6F458F8405C4F	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	FBB6F458F8405C4F	2	1527	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	33CE6247ECAEC4B6	2	5061	5	3
Verified	No proof (small exponent)	2024-07-01	kkmrkkblmbrbk	33CE6247ECAEC4B6	2	7060	5	3

History

Date	User	Type	Result
2025-03-13	masser	NF-PP1	Start=129/19, B1=430000000, B2=429570000000
2025-03-03	masser	NF-PP1	Start=6/5, B1=430000000, B2=429570000000
2025-01-23	masser	NF-PP1	Start=2/7, B1=430000000, B2=429570000000
2024-07-01	kkmrkkblmbrbk	C-PRP	M11633/226037821687/67657529 : 33CE6247ECAEC4B6
2023-01-20	-anonymous-	NF-PM1	B1=100000000000, B2=122192573512709700
2020-04-17	Oliver Kruse	C-PRP	M11633/67657529/226037821687 : 33CE6247ECAEC4B6
2017-10-12	kkmrkkblmbrbk	C-PRP	M11633/67657529/226037821687 : FBB6F458F8405C4F
2017-09-21	Oliver Kruse	C-PRP	M11633/67657529/226037821687 : FBB6F458F8405C4F
2017-09-21	Oliver Kruse	C-PRP	M11633/67657529/226037821687 : FBB6F458F8405C4F
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=10000000000, E=12
2011-02-05	Oscar Östlin	F	Factor: 15293160475885031423
2008-08-26	-anonymous-	F	Factor: 226037821687