2 116 981 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
10171889221571249	17	53.2	old
572484829865708828177	21	69.0	2019-09-22 21:07:16

ECM

Digits	B1	Curves
25	50000	125 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 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	67A520CDCE70A642	1	0	1	3
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	67A520CDCE70A642	1	903588	1	3
Verified	2019-09-23	mnd9	F2131384484AEA21	2	1984930	5	3
Verified	2019-09-23	ATH	F2131384484AEA21	2	975409	5	3

History

Date	User	Type	Result
2019-09-23	ATH	C-PRP	M2116981/10171889221571249/572484829865708828177 : F2131384484AEA21 PRP: Verified PRP without proof (not generated)
2019-09-23	mnd9	C-PRP	M2116981/10171889221571249/572484829865708828177 : F2131384484AEA21 PRP: Verified PRP without proof (not generated)
2019-09-22	_p95holder_	F-ECM	Factor: 572484829865708828177 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-17	kkmrkkblmbrbk	C-PRP	M2116981/10171889221571249 : 67A520CDCE70A642 PRP: Verified PRP without proof (not generated)
2017-10-07	Oliver Kruse	C-PRP	M2116981/10171889221571249 : 67A520CDCE70A642 PRP: Verified PRP without proof (not generated)
2016-03-26	alpertron	NF-PM1	B1=500000, B2=15000000, E=12