2 019 337 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
31952211671441	14	44.9	old
495345660066833	15	48.8	2014-04-15 11:46:44
208848023751201165970801	24	77.5	2021-05-15 11:26:06

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	116 / 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	39A9163F3DB6EE3E	2	0	1	3
Verified (Factored)	2017-11-13	kkmrkkblmbrbk	39A9163F3DB6EE3E	2	1345396	1	3
Verified	2021-05-15	tottenhoff	D3DFF3C1997538F1	3	869665	5	3

History

Date	User	Type	Result
2021-05-16	curtisc	CERT	PRP Certification Proof certified good
2021-05-15	tottenhoff	C-PRP	M2019337/31952211671441/495345660066833/208848023751201165970801 : D3DFF3C1997538F1 PRP proof power = 7 PRP: Verified Proof certified good
2021-05-15	_p95holder_	F-ECM	Factor: 208848023751201165970801 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-13	kkmrkkblmbrbk	C-PRP	M2019337/31952211671441/495345660066833 : 39A9163F3DB6EE3E PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M2019337/31952211671441/495345660066833 : 39A9163F3DB6EE3E PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-04-15	TJAOI	F	Factor: 495345660066833