1 658 233 Exponent Status

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁶¹

Factored

Factor	Digits	Bits	Date
109654994835105234675533433023465423	36	116.4	2018-05-12 18:20:00

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	Software
Factored		Steven Reasoner	F4C382D0C4E46B74	0	Linux 32-bit,Prime95,v13,(aka WP2)
Factored	1998-11-14	Robert Mutschler	F4C382D0C4E46B74	277841	Windows,Prime95,v17,(aka WT1)
Factored	2015-07-06	MadPoo 🙂	F4C382D0C4E46B74	474088	Windows 64-bit,Prime95,v26,(aka We4)

Status	Proof	Date	User	Residue	Shift	Type	Base
Factored	Certified Good Power=6	2025-09-02	Kriesel	CEE4BBE3E6FBFE67	0	1	3

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2018-05-13	storm5510	CEE4BBE3E6FBFE67	1	98928	5	3
Verified	PRP without proof (not generated)	2018-05-13	ATH	CEE4BBE3E6FBFE67	1	961862	5	3

History

Date	User	Type	Result
2025-09-03	Carlos Pinho	CERT	Proof certified good
2025-09-02	Kriesel	C-PRP	CEE4BBE3E6FBFE67 Proof Certified Good Proof Power: 6
2018-05-13	ATH	C-PRP	M1658233/109654994835105234675533433023465423 : CEE4BBE3E6FBFE67
2018-05-13	storm5510	C-PRP	M1658233/109654994835105234675533433023465423 : CEE4BBE3E6FBFE67
2018-05-12	VictordeHollander	F-ECM	Factor: 109654994835105234675533433023465423
2018-02-18	Joss	NF-PM1	B1=1658233, B2=80000000, E=12
2018-02-04	Joss	NF-PM1	B1=1658233, B2=40000000, E=12
2018-01-15	Joss	NF-PM1	B1=1658233, B2=20000000, E=12
2017-10-13	TJAOI	NF	no factor TF: 66-67
2016-02-23	Mark Rose	NF	no factor TF: 58-60
2016-02-23	Mark Rose	NF	no factor TF: 61-62
2016-02-23	Mark Rose	NF	no factor TF: 62-63
2015-10-11	ramgeis	NF	no factor TF: 65-66
2015-07-06	MadPoo 🙂	C-LL	F4C382D0C4E46B74
2015-05-09	monst	NF	no factor TF: 64-65
2015-05-08	omylist	NF	no factor TF: 63-64
2012-03-01	Axon	NF-PM1	B1=1000000, B2=20000000, E=12
2012-03-01	Axon	NF-PM1	B1=1000000, B2=8000000, E=12
2012-02-29	Axon	NF-PM1	B1=1000000
2012-02-29	Axon	NF-PM1	B1=900000
2012-02-29	Axon	NF-PM1	B1=800000
2012-02-29	Axon	NF-PM1	B1=700000
2012-02-29	Axon	NF-PM1	B1=600000
2012-02-29	Axon	NF-PM1	B1=500000
2012-02-29	Axon	NF-PM1	B1=400000
2012-02-29	Axon	NF-PM1	B1=300000
2012-02-29	Axon	NF-PM1	B1=200000
2012-02-29	Axon	NF-PM1	B1=100000
2010-08-13	GrunwalderGIMP	NF	no factor TF: 1-63
2010-04-29	Architects Cubed	NF	no factor TF: 60-61
2003-04-27	-anonymous-	NF	no factor TF: 1-58
1998-11-14	bezahar	NF	no factor TF: 1-57
1998-11-14	bezahar	C-LL	F4C382D0C4E46B74

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