1 999 441 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
79977641	8	26.3	old
6678404886918369814873	22	72.5	2021-10-01 03:30:55

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	83 / 640

Estimated T-Level: 25.6 ⓘ

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	773136B22F610955	1	0	1	3
Verified (Factored)	2017-11-13	kkmrkkblmbrbk	773136B22F610955	1	879900	1	3
Verified	2021-10-01	JackBlock	2F89372A39619049	2	672473	5	3
Verified	2021-10-02	_p95holder_	2F89372A39619049	2	1181983	5	3

History

Date	User	Type	Result
2022-08-16	USAFSS	NF-PM1	B1=132000, B2=134381520
2021-10-02	_p95holder_	C-PRP	M1999441/79977641/6678404886918369814873 : 2F89372A39619049 PRP: Verified PRP without proof (not generated)
2021-10-01	curtisc	CERT	PRP Certification Proof certified good
2021-10-01	JackBlock	C-PRP	M1999441/79977641/6678404886918369814873 : 2F89372A39619049 PRP proof power = 7 PRP: Verified Proof certified good
2021-10-01	_p95holder_	F-ECM	Factor: 6678404886918369814873 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-13	kkmrkkblmbrbk	C-PRP	M1999441/79977641 : 773136B22F610955 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1999441/79977641 : 773136B22F610955 PRP: Verified PRP without proof (not generated)