2 150 303 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
262336967	9	28.0	old
1005726817343	13	39.9	2008-07-14 20:20:49
3270047883570359	16	51.5	2014-07-01 11:28:37
725903795495330401	18	59.3	2015-11-12 11:39:04
185503240462887526937	21	67.3	2018-01-10 18:34:32

ECM

Digits	B1	Curves
25	50000	130 / 280

Estimated T-Level: 22.3 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	8E21BD59BBFD0107	4	0	1	3
Verified (Factored)	2017-10-21	Oliver Kruse	8E21BD59BBFD0107	4	1375468	1	3
Verified	2018-01-14	Oliver Kruse	5F39748C850D0683	5	1671888	5	3
Verified	2018-01-14	ATH	5F39748C850D0683	5	1132838	5	3

History

Date	User	Type	Result
2018-01-14	ATH	C-PRP	M2150303/262336967/1005726817343/3270047883570359/725903795495330401/185503240462887526937 : 5F39748C850D0683 PRP: Verified PRP without proof (not generated)
2018-01-14	Oliver Kruse	C-PRP	M2150303/262336967/1005726817343/3270047883570359/725903795495330401/185503240462887526937 : 5F39748C850D0683 PRP: Verified PRP without proof (not generated)
2018-01-10	alpertron	F-ECM	Factor: 185503240462887526937 / (ECM curve 3, B1=50000, B2=5000000)
2017-10-21	Oliver Kruse	C-PRP	M2150303/262336967/1005726817343/3270047883570359/725903795495330401 : 8E21BD59BBFD0107 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2150303/1005726817343/262336967/3270047883570359/725903795495330401 : 8E21BD59BBFD0107 PRP: Verified PRP without proof (not generated)
2016-03-21	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-11-12	TJAOI	F	Factor: 725903795495330401 / TF: 59-60
2014-07-01	TJAOI	F	Factor: 3270047883570359
2008-07-14	George Woltman	F-ECM	Factor: 1005726817343