205 151 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
12343477325080695593	20	63.4	2007-09-04 05:36:02

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	578 / 640

Estimated T-Level: 29.5 ⓘ

TF below 2^93 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-22	Oliver Kruse	111B270A906308AB	1	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	111B270A906308AB	1	196328	1	3
Verified	2020-04-17	Oliver Kruse	BBFAAC673AD2FF4B	1	12905	5	3
Verified	2023-08-03	USAFSS	BBFAAC673AD2FF4B	1	200436	5	3

History

Date	User	Type	Result
2023-08-03	iwes	CERT	PRP Certification Proof certified good
2023-08-03	USAFSS	C-PRP	M205151/12343477325080695593 : BBFAAC673AD2FF4B PRP proof power = 5 PRP: Verified Proof certified good
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2022-02-08	Oliver Kruse	NF-PM1	B1=30000000, B2=10264076402580
2021-05-10	Oliver Kruse	NF-PM1	B1=30000000, B2=3000000000
2020-04-17	Oliver Kruse	C-PRP	M205151/12343477325080695593 : BBFAAC673AD2FF4B PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M205151/12343477325080695593 : 111B270A906308AB PRP: Verified PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M205151/12343477325080695593 : 111B270A906308AB PRP: Verified PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M205151/12343477325080695593 : 111B270A906308AB PRP without proof (not generated)
2007-09-04	Chad Davis	F-ECM	Factor: 12343477325080695593