2 652 037 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
39650887876072795556081	23	75.1	2016-09-21 16:13:51

ECM

Digits	B1	Curves
25	50000	178 / 280

Estimated T-Level: 23.2 ⓘ

TF below 2^72 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored		Adrian Powell	A3B3D06CF2013B7E	0	Linux 32-bit,Prime95,v13,(aka WP2)
Factored	1999-04-02	Tim Dennehey	A3B3D06CF2013B7E	1101716	Windows,Prime95,v17,(aka WT1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-18	Oliver Kruse	841B900AAEA2CDA5	1	1381120	5	3
Verified	PRP without proof (not generated)	2017-12-03	storm5510	841B900AAEA2CDA5	1	1608488	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-03	storm5510	C-PRP	M2652037/39650887876072795556081 : 841B900AAEA2CDA5
2017-10-18	Oliver Kruse	C-PRP	M2652037/39650887876072795556081 : 841B900AAEA2CDA5
2016-09-21	Ismo Laitela	F-ECM	Factor: 39650887876072795556081
2016-02-23	Mark Rose	NF	no factor TF: 59-60
2016-01-21	ramgeis	NF	no factor TF: 65-66
2015-02-23	VictordeHollander	NF	no factor TF: 64-65
2015-02-23	VictordeHollander	NF	no factor TF: 63-64
2013-01-14	dbaugh	NF	no factor TF: 62-63
2012-05-30	Grant McCracken	NF	no factor TF: 61-62
2011-01-19	James Heinrich	NF-PM1	B1=180000, B2=4275000, E=6
2009-06-23	USAFSS	NF-PM1	B1=30000, B2=420000
2009-01-28	Sturle Sunde	NF	no factor TF: 60-61
2003-10-31	-anonymous-	NF-PM1	B1=2048, B2=204800
1999-04-02	TD	NF	no factor TF: 1-59
1999-04-02	TD	C-LL	A3B3D06CF2013B7E