1 988 999 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
3977999	7	21.9	old
7929566181289	13	42.9	2008-07-15 07:49:03
443546540555472438143	21	68.6	2021-06-22 09:20:02

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	60 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	134EDA4D34C85669	2	0	1	3
Verified (Factored)	2017-11-12	kkmrkkblmbrbk	134EDA4D34C85669	2	88408	1	3
Verified	2021-06-24	Klaus Nordmann	0DEFDFBE410B91E3	3	1533685	5	3

History

Date	User	Type	Result
2022-08-14	USAFSS	NF-PM1	B1=132000, B2=134381520
2021-06-24	curtisc	CERT	PRP Certification Proof certified good
2021-06-24	Klaus Nordmann	C-PRP	M1988999/3977999/7929566181289/443546540555472438143 : 0DEFDFBE410B91E3 PRP proof power = 7 PRP: Verified Proof certified good
2021-06-22	_p95holder_	F-ECM	Factor: 443546540555472438143 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-12	kkmrkkblmbrbk	C-PRP	M1988999/3977999/7929566181289 : 134EDA4D34C85669 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1988999/3977999/7929566181289 : 134EDA4D34C85669 PRP: Verified (Factored) PRP without proof (not generated)
2008-07-15	J Feitsma	F	Factor: 7929566181289