2 018 507 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
197813687	9	27.6	old
14585731583	11	33.8	2008-07-15 07:49:23
2602771331736943	16	51.2	2014-06-20 11:27:46
382873404440934094873	21	68.4	2021-05-12 01:22:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	115 / 640

Estimated T-Level: 25.9 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	701492FDBD430343	3	0	1	3
Verified (Factored)	2017-11-13	kkmrkkblmbrbk	701492FDBD430343	3	1994127	1	3
Verified	2021-05-12	RichD0	442D65FBDC18E9EC	4	853297	5	3

History

Date	User	Type	Result
2021-05-13	ANONYMOUS	CERT	PRP Certification Proof certified good
2021-05-12	RichD0	C-PRP	M2018507/197813687/14585731583/2602771331736943/382873404440934094873 : 442D65FBDC18E9EC PRP proof power = 7 PRP: Verified Proof certified good
2021-05-12	_p95holder_	F-ECM	Factor: 382873404440934094873 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-13	kkmrkkblmbrbk	C-PRP	M2018507/197813687/14585731583/2602771331736943 : 701492FDBD430343 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2018507/197813687/14585731583/2602771331736943 : 701492FDBD430343 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-06-20	TJAOI	F	Factor: 2602771331736943
2008-07-15	J Feitsma	F	Factor: 14585731583