266 477 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
3798896113	10	31.8	old
663212898622929449	18	59.2	2014-08-28 10:11:41
53027729446066391458817	23	75.5	2015-02-27 10:12:40

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	399 / 640

Estimated T-Level: 28.1 ⓘ

TF below 2^88 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	D1DEDAC312AD2242	3	0	1	3
Verified	2017-09-22	Oliver Kruse	D1DEDAC312AD2242	3	0	1	3
Verified	2017-11-06	kkmrkkblmbrbk	D1DEDAC312AD2242	3	220298	1	3
Unverified (Reliable)	2020-04-17	Oliver Kruse	2ADB59CF87B6E6__	3	240523	5	3

History

Date	User	Type	Result
2021-07-03	George Woltman	NF-PP1	Start=2/7, B1=10000000, B2=830000000
2021-07-03	George Woltman	NF-PM1	B1=20000000, B2=1820000000
2020-04-17	Oliver Kruse	C-PRP	M266477/3798896113/663212898622929449/53027729446066391458817 : 2ADB59CF87B6E6__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M266477/3798896113/663212898622929449/53027729446066391458817 : D1DEDAC312AD2242 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M266477/3798896113/663212898622929449/53027729446066391458817 : D1DEDAC312AD2242 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M266477/3798896113/663212898622929449/53027729446066391458817 : D1DEDAC312AD2242 PRP without proof (not generated)
2015-02-27	TJAOI	F-ECM	Factor: 53027729446066391458817 / (ECM curve 7, B1=50000, B2=5000000)
2014-08-28	TJAOI	F-ECM	Factor: 663212898622929449