525 533 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
98921289956399	14	46.5	old
1491285152109671469931511653736102887	37	120.2	2021-08-13 07:51:57

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	212 / 640

Estimated T-Level: 26.7 ⓘ

TF below 2^84 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-27	Oliver Kruse	83A243298CFE66B8	1	0	1	3
Verified (Factored)	2017-09-28	Oliver Kruse	83A243298CFE66B8	1	0	1	3
Verified (Factored)	2017-11-09	kkmrkkblmbrbk	83A243298CFE66B8	1	93117	1	3
Verified (Factored)	2020-04-19	Oliver Kruse	50335283BB3E8508	1	451098	5	3
Verified	2021-08-13	ViliamF	50335283BB3E8508	2	391570	5	3

P-1 factors

Date	Factor	B1	B2
2021-08-13	1491285152109671469931511653736102887	15000000	15000000

History

Date	User	Type	Result
2022-12-19	USAFSS	NF-PM1	B1=2000000, B2=6733146420
2021-08-14	CaptainEntropy	CERT	PRP Certification Proof certified good
2021-08-13	ViliamF	C-PRP	M525533/98921289956399/1491285152109671469931511653736102887 : 50335283BB3E8508 PRP proof power = 6 PRP: Verified Proof certified good
2021-08-13	ViliamF	F-PM1	Factor: 1491285152109671469931511653736102887 / (P-1, B1=15000000)
2020-04-19	Oliver Kruse	C-PRP	M525533/98921289956399 : 50335283BB3E8508 PRP: Verified (Factored) PRP without proof (small exponent)
2017-11-09	kkmrkkblmbrbk	C-PRP	M525533/98921289956399 : 83A243298CFE66B8 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-28	Oliver Kruse	C-PRP	M525533/98921289956399 : 83A243298CFE66B8 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M525533/98921289956399 : 83A243298CFE66B8 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=1500000, B2=50000000, E=12