2 061 667 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 5 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
151293371129	12	37.1	old
11967432654913	14	43.4	2008-08-26 20:20:36
36724303482505721	17	55.0	2015-01-01 11:30:16
7147979404516933478496863	25	82.6	2022-07-01 18:04:33
1480105387670085055492762351	28	90.3	2024-07-23 10:13:11

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	159 / 640

Estimated T-Level: 26.2 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-06	Oliver Kruse	CA3BAD382A07016F	1	0	1	3
Verified (Factored)	2017-10-17	Oliver Kruse	65E6CF64E72D946F	3	1680288	5	3
Verified (Factored)	2017-11-16	kkmrkkblmbrbk	65E6CF64E72D946F	3	1927955	5	3
Verified (Factored)	2022-07-03	_p95holder_	65E6CF64E72D946F	4	1921640	5	3
Verified	2024-07-23	Naegi Makoto	65E6CF64E72D946F	5	1697171	5	3

History

Date	User	Type	Result
2024-07-24	Maxman	CERT	PRP Certification Proof certified good
2024-07-23	Naegi Makoto	C-PRP	M2061667/151293371129/11967432654913/36724303482505721/7147979404516933478496863/1480105387670085055492762351 : 65E6CF64E72D946F PRP proof power = 7 PRP: Verified Proof certified good
2024-07-23	TJAOI	F-ECM	Factor: 1480105387670085055492762351 / (ECM curve 55, B1=250000, B2=251325195, Edwards Sigma=6225378776135534)
2022-07-03	_p95holder_	C-PRP	M2061667/151293371129/11967432654913/36724303482505721/7147979404516933478496863 : 65E6CF64E72D946F PRP: Verified (Factored) PRP without proof (not generated)
2022-07-01	_p95holder_	F-ECM	Factor: 7147979404516933478496863 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-16	kkmrkkblmbrbk	C-PRP	M2061667/151293371129/11967432654913/36724303482505721 : 65E6CF64E72D946F PRP: Verified (Factored) PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M2061667/151293371129/11967432654913/36724303482505721 : 65E6CF64E72D946F PRP: Verified (Factored) PRP without proof (not generated)
2017-10-06	Oliver Kruse	C-PRP	M2061667/151293371129/11967432654913/36724303482505721 : CA3BAD382A07016F PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-01-01	TJAOI	F	Factor: 36724303482505721 / TF: 55-56
2008-08-26	-Anonymous-	F	Factor: 11967432654913