1 751 879 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
8149146732464985554278831	25	82.8	2016-05-01 17:51:05

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)		Pierre Sopel	06100327A4FAF7AB	0
Verified (Factored)	1998-12-06	John Wyszynski	06100327A4FAF7AB	1545064
Verified (Factored)	2015-06-27	MadPoo	06100327A4FAF7AB	25124

Status	Date	User	Residue	Shift	Type	Base
Verified (Factored)	2025-09-02	Kriesel	94DFA2A0DCAD3442	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	3B99C3A105F0569A	1	0	1	3
Verified	2017-11-04	kkmrkkblmbrbk	3B99C3A105F0569A	1	244162	1	3

History

Date	User	Type	Result
2025-09-03	SpartaAlumni	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-02	Kriesel	C-PRP	94DFA2A0DCAD3442 PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2017-11-04	kkmrkkblmbrbk	C-PRP	M1751879/8149146732464985554278831 : 3B99C3A105F0569A PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1751879/8149146732464985554278831 : 3B99C3A105F0569A PRP: Verified PRP without proof (not generated)
2016-05-01	Dennis Schreiber	F-ECM	Factor: 8149146732464985554278831 / (ECM curve 3, B1=50000, B2=5000000)
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-09-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-06-28	mikr	NF-PM1	B1=3642200, B2=123456789, E=12
2015-06-27	MadPoo	C-LL	06100327A4FAF7AB
2015-05-13	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-13	snme2pm1	NF	no factor from 2^63 to 2^64
2015-04-24	Squeeky_Squirrel	NF-PM1	B1=130000, B2=3640000, E=6
2014-09-16	-Anonymous-	NF-PM1	B1=173274
2014-05-06	Joss	NF-PM1	B1=136637
2014-04-08	Joss	NF-PM1	B1=100000
2011-02-11	Carsten Kossendey	NF-PM1	B1=95000, B2=1567500, E=6
2010-12-13	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-19	Architects Cubed	NF	no factor from 2^60 to 2^61

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