2 122 139 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
16977113	8	24.0	old
1120489393	10	30.1	2008-07-14 20:20:36
44358867791657	14	45.3	2008-08-26 20:20:44
328149352004812232551	21	68.2	2022-01-15 16:13:08

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)	2017-10-07	Oliver Kruse	896BAC019B02B0AC	3	0	1	3
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	896BAC019B02B0AC	3	1120696	1	3
Verified	2022-01-15	SRJ2877	F4FF9136EFF4CF0D	4	463193	5	3

History

Date	User	Type	Result
2022-01-17	lajo321	CERT	PRP Certification Proof certified good
2022-01-15	SRJ2877	C-PRP	M2122139/16977113/1120489393/44358867791657/328149352004812232551 : F4FF9136EFF4CF0D PRP proof power = 7 PRP: Verified Proof certified good
2022-01-15	_p95holder_	F-ECM	Factor: 328149352004812232551 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-17	kkmrkkblmbrbk	C-PRP	M2122139/16977113/1120489393/44358867791657 : 896BAC019B02B0AC PRP: Verified (Factored) PRP without proof (not generated)
2017-10-07	Oliver Kruse	C-PRP	M2122139/16977113/1120489393/44358867791657 : 896BAC019B02B0AC PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 44358867791657
2008-07-14	George Woltman	F-ECM	Factor: 1120489393