1 355 311 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
35277200646999536297	20	64.9	2018-03-14 14:38:53
1757529397129009095127	22	70.6	2009-08-04 04:30:04

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Ken Kriesel	FBEB5FD61BD41034	0
Verified (Factored)		Cornelius Caesar	FBEB5FD61BD41034	0
Verified (Factored)		Brian J. Beesley	FBEB5FD61BD41034	131406

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	Oliver Kruse	2771AA6EB8C14480	1	0	1	3
Verified (Factored)	2017-10-24	kkmrkkblmbrbk	2771AA6EB8C14480	1	826446	1	3
Verified	2018-03-14	ATH	76000B94CB0D1129	2	64424	5	3
Verified	2018-03-14	Cubox	76000B94CB0D1129	2	1267769	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^63 to 2^64
2022-03-07	LordJulius	NF	no factor from 2^62 to 2^63
2022-03-07	LordJulius	NF	no factor from 2^61 to 2^62
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-03-14	Cubox	C-PRP	M1355311/1757529397129009095127/35277200646999536297 : 76000B94CB0D1129 PRP: Verified PRP without proof (not generated)
2018-03-14	ATH	C-PRP	M1355311/1757529397129009095127/35277200646999536297 : 76000B94CB0D1129 PRP: Verified PRP without proof (not generated)
2018-03-14	TJAOI	F	Factor: 35277200646999536297 / TF: 64-65
2017-10-24	kkmrkkblmbrbk	C-PRP	M1355311/1757529397129009095127 : 2771AA6EB8C14480 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1355311/1757529397129009095127 : 2771AA6EB8C14480 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2009-08-04	Lukasz Wrobel	F-ECM	Factor: 1757529397129009095127
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61