2 281 619 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
4563239	7	22.1	old
18252953	8	24.1	2008-07-14 20:22:41
103650300579601	15	46.6	2008-09-07 10:05:05
657519385694441069753	21	69.2	2022-08-02 21:57:52

ECM

Digits	B1	Curves
25	50000	114 / 280

Estimated T-Level: 22.0 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-11	Oliver Kruse	F21EABCE032C1BD6	3	0	1	3
Verified (Factored)	2017-11-22	kkmrkkblmbrbk	F21EABCE032C1BD6	3	73550	1	3
Verified	2022-08-03	LordJulius	2895565919DE43DE	4	126163	5	3

History

Date	User	Type	Result
2022-08-03	schweigmon	CERT	PRP Certification Proof certified good
2022-08-03	LordJulius	C-PRP	M2281619/4563239/18252953/103650300579601/657519385694441069753 : 2895565919DE43DE PRP proof power = 7 PRP: Verified Proof certified good
2022-08-02	_p95holder_	F-ECM	Factor: 657519385694441069753 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-22	kkmrkkblmbrbk	C-PRP	M2281619/4563239/18252953/103650300579601 : F21EABCE032C1BD6 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-11	Oliver Kruse	C-PRP	M2281619/4563239/18252953/103650300579601 : F21EABCE032C1BD6 PRP: Verified (Factored) PRP without proof (not generated)
2016-04-12	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-09-07	Will Edgington	F	Factor: 103650300579601
2008-07-14	George Woltman	F-ECM	Factor: 18252953