2 120 887 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
5722153127	10	32.4	old
549175765051759	15	49.0	2014-04-17 11:29:19
11274308119729607	17	53.3	2014-09-18 11:46:14
155141804615862680431591	24	77.0	2022-07-01 21:25:53
101653296447632937153576919033	30	96.4	2016-03-08 11:18:38

ECM

Digits	B1	Curves
25	50000	100 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-07	Oliver Kruse	14F68559DBDAD26B	1	0	1	3
Verified (Factored)	2017-10-17	Oliver Kruse	68EA7E3D5F43EE82	4	1036378	5	3
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	68EA7E3D5F43EE82	4	2067479	5	3
Verified	2022-07-03	_p95holder_	68EA7E3D5F43EE82	5	322950	5	3

P-1 factors

Date	Factor	B1	B2
2016-03-08	101653296447632937153576919033	500000	15000000

History

Date	User	Type	Result
2022-07-03	_p95holder_	C-PRP	M2120887/5722153127/549175765051759/11274308119729607/101653296447632937153576919033/155141804615862680431591 : 68EA7E3D5F43EE82 PRP: Verified PRP without proof (not generated)
2022-07-01	_p95holder_	F-ECM	Factor: 155141804615862680431591 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-17	kkmrkkblmbrbk	C-PRP	M2120887/5722153127/549175765051759/11274308119729607/101653296447632937153576919033 : 68EA7E3D5F43EE82 PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M2120887/5722153127/549175765051759/11274308119729607/101653296447632937153576919033 : 68EA7E3D5F43EE82 PRP: Verified PRP without proof (not generated)
2017-10-07	Oliver Kruse	C-PRP	M2120887/5722153127/549175765051759/11274308119729607/101653296447632937153576919033 : 14F68559DBDAD26B PRP: Verified PRP without proof (not generated)
2016-03-08	alpertron	F-PM1	Factor: 101653296447632937153576919033 / (P-1, B1=500000, B2=15000000, E=12)
2014-09-18	TJAOI	F	Factor: 11274308119729607 / TF: 53-54
2014-04-17	TJAOI	F	Factor: 549175765051759