2 071 429 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
1204440677767	13	40.1	old
77289848381413998484711	23	76.0	2021-11-25 03:39:48

ECM

Digits	B1	Curves
25	50000	107 / 280

Estimated T-Level: 21.9 ⓘ

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)	2017-10-06	Oliver Kruse	B6CE426ADB6D1638	1	0	1	3
Verified (Factored)	2017-11-16	kkmrkkblmbrbk	B6CE426ADB6D1638	1	1547741	1	3
Verified	2021-11-27	_p95holder_	64AA1B9D0A7EF464	2	637995	5	3
Verified	2021-12-01	Joe S.	64AA1B9D0A7EF464	2	874507	5	3

History

Date	User	Type	Result
2021-12-01	PrimeHunter	CERT	PRP Certification Proof certified good
2021-12-01	Joe S.	C-PRP	M2071429/1204440677767/77289848381413998484711 : 64AA1B9D0A7EF464 PRP proof power = 7 PRP: Verified Proof certified good
2021-11-27	_p95holder_	C-PRP	M2071429/1204440677767/77289848381413998484711 : 64AA1B9D0A7EF464 PRP: Verified PRP without proof (not generated)
2021-11-25	_p95holder_	F-ECM	Factor: 77289848381413998484711 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-16	kkmrkkblmbrbk	C-PRP	M2071429/1204440677767 : B6CE426ADB6D1638 PRP: Verified PRP without proof (not generated)
2017-10-06	Oliver Kruse	C-PRP	M2071429/1204440677767 : B6CE426ADB6D1638 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12