144 889 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
320067220871790931895391367	27	88.0	2009-01-04 05:20:19

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	187 / 1566

Estimated T-Level: 30.6 ⓘ

TF below 2^97 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gary Gostin	1D7E	0
Verified (Factored)		Amdahl 6 - 1989	16901D7E	0
Verified (Factored)		Jay R. Hill	38973E1ED6901D7E	0
Verified (Factored)		Brian J. Beesley	38973E1ED6901D7E	0
Verified (Factored)		Eivind Triel	38973E1ED6901D7E	8161

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-22	Oliver Kruse	DB01F60C8EA9768F	1	0	1	3
Verified	2017-10-13	Oliver Kruse	DB01F60C8EA9768F	1	60802	1	3
Verified	2017-11-06	kkmrkkblmbrbk	DB01F60C8EA9768F	1	142396	1	3
Verified	2020-04-17	Oliver Kruse	954308DB36DFDD1A	1	85975	5	3
Verified	2024-02-03	Wentao Huang	954308DB36DFDD1A	1	136171	5	3

History

Date	User	Type	Result
2024-02-03	slaur	CERT	PRP Certification Proof certified good
2024-02-03	Wentao Huang	C-PRP	M144889/320067220871790931895391367 : 954308DB36DFDD1A PRP proof power = 5 PRP: Verified Proof certified good
2022-03-07	LordJulius	NF	no factor from 2^57 to 2^58
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2020-04-17	Oliver Kruse	C-PRP	M144889/320067220871790931895391367 : 954308DB36DFDD1A PRP: Verified PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M144889/320067220871790931895391367 : DB01F60C8EA9768F PRP: Verified PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M144889/320067220871790931895391367 : DB01F60C8EA9768F PRP: Verified PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M144889/320067220871790931895391367 : DB01F60C8EA9768F PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M144889/320067220871790931895391367 : DB01F60C8EA9768F PRP without proof (not generated)
2017-04-16	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12
2009-01-04	axn	F-ECM	Factor: 320067220871790931895391367
2008-12-31	Sturle Sunde	NF	no factor from 2^58 to 2^59