1 648 837 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
3700145902759758609607	22	71.6	2012-02-13 10:10:27
657658709273744410476799	24	79.1	2022-10-18 10:24:46

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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)		Marcel van der Peijl	F064E326249B5893	0
Verified (Factored)	1999-01-10	Stephen Wood	F064E326249B5893	196370

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-02	Oliver Kruse	C86DDBEA794C506C	1	0	1	3
Verified (Factored)	2017-11-02	kkmrkkblmbrbk	C86DDBEA794C506C	1	1213381	1	3
Verified	2022-10-18	Kevin_9611	447864E66E95B6AE	2	1082767	5	3

History

Date	User	Type	Result
2022-10-18	Perig	CERT	PRP Certification Proof certified good
2022-10-18	Kevin_9611	C-PRP	M1648837/3700145902759758609607/657658709273744410476799 : 447864E66E95B6AE PRP proof power = 6 PRP: Verified Proof certified good
2022-10-18	TJAOI	F-ECM	Factor: 657658709273744410476799 / (ECM curve 17, B1=250000, B2=40000000)
2021-07-15	George Woltman	NF-PP1	Start=2/7, B1=2500000, B2=195000000
2021-07-15	George Woltman	NF-PM1	B1=5000000, B2=505000000
2017-11-02	kkmrkkblmbrbk	C-PRP	M1648837/3700145902759758609607 : C86DDBEA794C506C PRP: Verified (Factored) PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1648837/3700145902759758609607 : C86DDBEA794C506C PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2012-02-13	Axon	F-ECM	Factor: 3700145902759758609607
2012-02-13	Axon	NF-PM1	B1=1000000, B2=40000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000, B2=32000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000, B2=24000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000, B2=16000000, E=12
2012-02-13	Axon	NF-PM1	B1=1000000
2012-02-13	Axon	NF-PM1	B1=900000
2012-02-13	Axon	NF-PM1	B1=800000
2012-02-13	Axon	NF-PM1	B1=700000
2012-02-13	Axon	NF-PM1	B1=600000
2012-02-13	Axon	NF-PM1	B1=500000
2012-02-13	Axon	NF-PM1	B1=400000
2012-02-13	Axon	NF-PM1	B1=300000
2012-02-13	Axon	NF-PM1	B1=200000
2012-02-13	Axon	NF-PM1	B1=100000
2010-08-03	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-05-01	Architects Cubed	NF	no factor from 2^60 to 2^61

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