4 883 033 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
2106263861210881	16	50.9	old
278866545282389621903	21	67.9	2019-07-19 20:45:25

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	C4326DEF8DE42991	1	0	1	3
Verified (Factored)	2018-04-03	Oliver Kruse	C4326DEF8DE42991	1	1139367	1	3
Verified	2019-07-20	Niels_Mache_Nextcloud	6322DDE67A69FCCC	2	3811956	5	3
Verified	2019-07-20	Nesowa	6322DDE67A69FCCC	2	2334789	5	3

History

Date	User	Type	Result
2023-09-01	USAFSS	NF-PM1	B1=256000, B2=105522060
2019-07-20	Nesowa	C-PRP	M4883033/2106263861210881/278866545282389621903 : 6322DDE67A69FCCC PRP: Verified PRP without proof (not generated)
2019-07-20	Niels_Mache_Nextcloud	C-PRP	M4883033/2106263861210881/278866545282389621903 : 6322DDE67A69FCCC PRP: Verified PRP without proof (not generated)
2019-07-19	MarkS	F-ECM	Factor: 278866545282389621903 / (ECM curve 3, B1=50000, B2=5000000)
2018-04-03	Oliver Kruse	C-PRP	M4883033/2106263861210881 : C4326DEF8DE42991 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4883033/2106263861210881 : C4326DEF8DE42991 PRP: Verified PRP without proof (not generated)