11 268 847 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
11249593208562966768465440345445283249	38	123.1	2020-04-24 21:27:29

ECM

Digits	B1	Curves
25	50000	15 / 280

Estimated T-Level: 20.3 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	2000-11-15	Steve Spicer	89037868C2151DA9	3093364
Verified (Factored)	2004-04-09	Dylan Griffiths	89037868C2151DA9	746224

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-04-26	riccardo uberti	F2B006A5799240C1	1	3472010	5	3
Verified	2020-04-29	M Miller	F2B006A5799240C1	1	8197188	5	3

P-1 factors

Date	Factor	B1	B2
2020-04-24	11249593208562966768465440345445283249	430000	8500000

History

Date	User	Type	Result
2021-04-04	riccardo uberti	NF-PM1	B1=1000000, B2=76000000
2020-04-29	M Miller	C-PRP	M11268847/11249593208562966768465440345445283249 : F2B006A5799240C1 PRP: Verified PRP without proof (not generated)
2020-04-26	riccardo uberti	C-PRP	M11268847/11249593208562966768465440345445283249 : F2B006A5799240C1 PRP: Verified PRP without proof (not generated)
2020-04-24	riccardo uberti	F-PM1	Factor: 11249593208562966768465440345445283249 / (P-1, B1=430000, B2=8500000, E=12)
2017-12-27	ramgeis	NF	no factor from 2^68 to 2^69
2017-12-27	ramgeis	NF	no factor from 2^67 to 2^68
2015-12-28	VictordeHollander	NF	no factor from 2^66 to 2^67
2015-02-01	Numberwang	NF	no factor from 2^65 to 2^66
2013-11-22	lycorn	NF	no factor from 2^64 to 2^65