2 166 007 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
400344308433991	15	48.5	old
1927653009862923527	19	60.7	2016-03-02 12:21:38
307288944785294388431	21	68.1	2023-01-20 13:25:58

ECM

Digits	B1	Curves
25	50000	97 / 280

Estimated T-Level: 21.7 ⓘ

TF below 2^67 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	F030C970AF7BDC68	2	0	1	3
Verified (Factored)	2017-11-19	kkmrkkblmbrbk	F030C970AF7BDC68	2	442727	1	3
Verified	2023-01-22	_p95holder_	02978311B28D86B3	3	1206688	5	3
Verified	2023-01-25	rucio	02978311B28D86B3	3	1214369	5	3

History

Date	User	Type	Result
2023-01-25	PCanalytics.com	CERT	PRP Certification Proof certified good
2023-01-25	rucio	C-PRP	M2166007/400344308433991/1927653009862923527/307288944785294388431 : 02978311B28D86B3 PRP proof power = 7 PRP: Verified Proof certified good
2023-01-22	_p95holder_	C-PRP	M2166007/400344308433991/1927653009862923527/307288944785294388431 : 02978311B28D86B3 PRP: Verified PRP without proof (not generated)
2023-01-20	_p95holder_	F-ECM	Factor: 307288944785294388431 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-19	kkmrkkblmbrbk	C-PRP	M2166007/400344308433991/1927653009862923527 : F030C970AF7BDC68 PRP: Verified PRP without proof (not generated)
2017-10-09	Oliver Kruse	C-PRP	M2166007/400344308433991/1927653009862923527 : F030C970AF7BDC68 PRP: Verified PRP without proof (not generated)
2016-03-29	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2016-03-02	TJAOI	F	Factor: 1927653009862923527 / TF: 60-61