533 641 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
265072392419217500347777	24	77.8	2007-09-20 12:23:46

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	210 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-27	Oliver Kruse	67C7FDA425F6FB71	1	0	1	3
Verified	2017-09-28	Oliver Kruse	67C7FDA425F6FB71	1	0	1	3
Verified	2017-11-07	kkmrkkblmbrbk	67C7FDA425F6FB71	1	373963	1	3
Unverified (Reliable)	2020-04-19	Oliver Kruse	A0C981D4B2E72D__	1	495966	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-08-25	ViliamF	NF-PM1	B1=15000000, B2=1815000000
2020-04-19	Oliver Kruse	C-PRP	M533641/265072392419217500347777 : A0C981D4B2E72D__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-07	kkmrkkblmbrbk	C-PRP	M533641/265072392419217500347777 : 67C7FDA425F6FB71 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-28	Oliver Kruse	C-PRP	M533641/265072392419217500347777 : 67C7FDA425F6FB71 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M533641/265072392419217500347777 : 67C7FDA425F6FB71 PRP: Unverified (Reliable) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=1500000, B2=50000000, E=12
2007-09-20	Chad Davis	F-ECM	Factor: 265072392419217500347777