2 163 919 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
38950543	8	25.2	old
901558939489121	15	49.7	2014-05-08 12:29:29
836757898315883216479	21	69.5	2022-02-02 03:02:45

ECM

Digits	B1	Curves
25	50000	103 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-09	Oliver Kruse	3A53EFED60026F53	2	0	1	3
Verified (Factored)	2017-11-19	kkmrkkblmbrbk	3A53EFED60026F53	2	1757402	1	3
Verified	2022-02-04	_p95holder_	B9C5918436425485	3	1356512	5	3
Verified	2022-02-07	ATH	B9C5918436425485	3	986522	5	3

History

Date	User	Type	Result
2022-02-07	ANONYMOUS	CERT	PRP Certification Proof certified good
2022-02-07	ATH	C-PRP	M2163919/38950543/901558939489121/836757898315883216479 : B9C5918436425485 PRP proof power = 7 PRP: Verified Proof certified good
2022-02-04	_p95holder_	C-PRP	M2163919/38950543/901558939489121/836757898315883216479 : B9C5918436425485 PRP: Verified PRP without proof (not generated)
2022-02-02	_p95holder_	F-ECM	Factor: 836757898315883216479 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-19	kkmrkkblmbrbk	C-PRP	M2163919/38950543/901558939489121 : 3A53EFED60026F53 PRP: Verified PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2163919/38950543/901558939489121 : 3A53EFED60026F53 PRP: Verified PRP without proof (not generated)
2016-04-04	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-05-08	TJAOI	F	Factor: 901558939489121