3 672 727 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷¹

TF target 2⁶⁴

TF below 2^76 is very unlikely to find new factors due to ECM effort.

P-1

B1 =	10000000
B2 =	14686021350

ECM

Digits	B1	Curves
25	50000	244 / 280

Estimated T-Level: 24.4 ⓘ

Status	Date	User	Residue	Shift
Verified		David Allen	99E439C0B33382BC	0
Verified	2000-01-12	David Linton	99E439C0B33382BC	1037559

History

Date	User	Type	Result
2025-04-01	TJAOI	NF	no factor from 2^70 to 2^71
2024-08-07	Joss	NF-PM1	B1=10000000, B2=14686021350
2023-12-20	Joss	NF-PM1	B1=2365943, B2=4778283510
2023-08-31	Joss	NF-PM1	B1=1000000, B2=1257446190
2021-02-26	axn	NF	no factor from 2^69 to 2^70
2020-11-12	axn	NF	no factor from 2^68 to 2^69
2020-10-20	axn	NF-PM1	B1=30000000, B2=600000000, E=12
2018-10-29	TJAOI	NF	no factor from 2^67 to 2^68
2017-01-29	Joss	NF-PM1	B1=167520
2017-01-25	Squeeky_Squirrel	NF-PM1	B1=230000, B2=6842500, E=12
2017-01-03	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-12-30	Joss	NF-PM1	B1=129600
2016-12-24	Joss	NF-PM1	B1=108000
2016-06-25	Joss	NF-PM1	B1=90000, B2=3285000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2015-12-24	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-06-05	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2012-02-09	Squeeky_Squirrel	NF-PM1	B1=90000, B2=1642500, E=6
2011-05-31	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-11	Carsten Kossendey	NF-PM1	B1=20000, B2=260000
2009-03-08	S485122	NF	no factor from 2^60 to 2^61

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