3 561 253 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
1178303944981483505907497	25	80.0	2021-07-07 20:17:42

ECM

Digits	B1	Curves
25	50000	29 / 280

Estimated T-Level: 20.5 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		INTERSHOP Communications	6EDC926C8FF40245	0
Verified (Factored)	2000-01-12	Bob J. Taylor	6EDC926C8FF40245	1575751

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-07-17	123456789123456789	8842CA2EAA94179F	1	3465693	5	3

History

Date	User	Type	Result
2023-10-15	USAFSS	NF-PM1	B1=384000, B2=235070550
2022-05-19	Joss	NF-PM1	B1=100000, B2=130364850
2022-03-01	Joss	NF-PM1	B1=100000
2021-07-17	Ben Delo	CERT	PRP Certification Proof certified good
2021-07-17	123456789123456789	C-PRP	M3561253/1178303944981483505907497 : 8842CA2EAA94179F PRP proof power = 7 PRP: Verified Proof certified good
2021-07-07	kutens	F-ECM	Factor: 1178303944981483505907497 / (ECM curve 7, B1=50000, B2=6800000, Sigma=3861495507548066)
2021-03-17	-Anonymous-	NF	no factor from 2^70 to 2^71
2021-03-17	-Anonymous-	NF	no factor from 2^69 to 2^70
2020-12-23	axn	NF	no factor from 2^68 to 2^69
2019-01-21	TJAOI	NF	no factor from 2^67 to 2^68
2017-05-06	Joss	NF-PM1	B1=350000, B2=3500000, E=6
2017-01-17	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-01	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-12-31	Squeeky_Squirrel	NF-PM1	B1=175000, B2=4681250, E=6
2015-01-30	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-30	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-11-19	Joss	NF-PM1	B1=96046
2014-08-15	-Anonymous-	NF-PM1	B1=78023
2012-06-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-12-18	Squeeky_Squirrel	NF-PM1	B1=60000, B2=1005000, E=6
2011-06-26	markr	NF	no factor to 2^62
2009-07-08	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-16	S485122	NF	no factor from 2^60 to 2^61

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