2 202 041 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
1797737467331876971816583	25	80.6	2015-11-23 18:51:33

ECM

Digits	B1	Curves
25	50000	110 / 280

Estimated T-Level: 22.0 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ray Strouble	887A72260A5CFC9F	0
Verified (Factored)	1999-02-07	chris clark	887A72260A5CFC9F	1035693

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	F43CE82EC99C0982	1	0	1	3
Verified	2017-10-25	Oliver Kruse	F43CE82EC99C0982	1	1971433	1	3

P-1 factors

Date	Factor	B1	B2
2015-11-23	1797737467331876971816583	1000000	5000000

History

Date	User	Type	Result
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-10-25	Oliver Kruse	C-PRP	M2202041/1797737467331876971816583 : F43CE82EC99C0982 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2202041/1797737467331876971816583 : F43CE82EC99C0982 PRP: Verified PRP without proof (not generated)
2016-04-07	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-11-23	Alexander Dubrovin	F-PM1	Factor: 1797737467331876971816583 / (P-1, B1=1000000, B2=5000000, E=6)
2015-10-21	ramgeis	NF	no factor from 2^65 to 2^66
2015-10-03	Alexander Dubrovin	NF-PM1	B1=300000, B2=3000000, E=6
2015-03-03	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-03	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-17	Joss	NF-PM1	B1=148296
2014-07-04	Joss	NF-PM1	B1=119148
2013-12-04	LaurV	NF	no factor from 2^62 to 2^63
2011-01-10	markr	NF-PM1	B1=90000, B2=1642500, E=6
2010-11-09	Joss	NF-PM1	B1=30000
2010-11-05	Joss	NF-PM1	B1=15000
2009-01-06	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-03	Sturle Sunde	NF	no factor from 2^60 to 2^61