1 799 621 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
105234533384693938304708591	27	86.4	2015-06-18 15:07:58

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Paul F. Bird	1EBD098081B4751D	0
Verified (Factored)	1999-05-23	Aaron B	1EBD098081B4751D	1385765
Verified (Factored)	1999-09-07	Bill Tracey	1EBD098081B4751D	346955

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	817EBF51E75DA7E0	1	0	1	3
Verified	2017-11-05	kkmrkkblmbrbk	817EBF51E75DA7E0	1	1476831	1	3

P-1 factors

Date	Factor	B1	B2
2015-06-18	105234533384693938304708591	2475400	0

History

Date	User	Type	Result
2023-04-17	Kevin_9611	NF-PM1	B1=2980000, B2=5491204950
2017-11-05	kkmrkkblmbrbk	C-PRP	M1799621/105234533384693938304708591 : 817EBF51E75DA7E0 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1799621/105234533384693938304708591 : 817EBF51E75DA7E0 PRP: Verified PRP without proof (not generated)
2015-06-18	mikr	F-PM1	Factor: 105234533384693938304708591 / (P-1, B1=2475400)
2015-05-15	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-15	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-19	Joss	NF-PM1	B1=171330
2014-05-09	Joss	NF-PM1	B1=135665
2011-02-11	Carsten Kossendey	NF-PM1	B1=100000, B2=1650000, E=6
2010-12-13	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-20	Architects Cubed	NF	no factor from 2^60 to 2^61