138 449 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
1107593	7	20.1	old
327555104610001	15	48.2	2008-08-26 20:12:26
4990441935819775131771791494453023632727497	43	141.8	2017-03-18 11:08:43

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	196 / 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	Number of known factors	Shift	Type	Base
Verified	2017-09-22	Oliver Kruse	FE8F2EFF6F5C6A1F	3	0	1	3
Verified	2017-10-09	Chang Chia-Tche	FE8F2EFF6F5C6A1F	3	0	1	3
Verified	2017-10-13	kkmrkkblmbrbk	FE8F2EFF6F5C6A1F	3	73261	1	3
Verified	2020-04-17	Oliver Kruse	2662D3D6D6B5AA79	3	20683	5	3
Verified	2024-02-03	Wentao Huang	2662D3D6D6B5AA79	3	23387	5	3

P-1 factors

Date	Factor	B1	B2
2017-03-18	4990441935819775131771791494453023632727497	100000000	0

History

Date	User	Type	Result
2024-02-03	Naegi Makoto	CERT	PRP Certification Proof certified good
2024-02-03	Wentao Huang	C-PRP	M138449/1107593/327555104610001/4990441935819775131771791494453023632727497 : 2662D3D6D6B5AA79 PRP proof power = 5 PRP: Verified Proof certified good
2020-04-17	Oliver Kruse	C-PRP	M138449/1107593/327555104610001/4990441935819775131771791494453023632727497 : 2662D3D6D6B5AA79 PRP: Verified PRP without proof (small exponent)
2017-10-13	kkmrkkblmbrbk	C-PRP	M138449/1107593/327555104610001/4990441935819775131771791494453023632727497 : FE8F2EFF6F5C6A1F PRP: Verified PRP without proof (not generated)
2017-10-09	Chang Chia-Tche	C-PRP	M138449/known_factors : FE8F2EFF6F5C6A1F PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M138449/known_factors : FE8F2EFF6F5C6A1F PRP without proof (not generated)
2017-03-18	kkmrkkblmbrbk	F-PM1	Factor: 4990441935819775131771791494453023632727497 / (P-1, B1=100000000)
2008-08-26	-Anonymous-	F-PM1	Factor: 327555104610001