1 122 371 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
2495974007288711647	19	61.1	2009-09-05 06:26:34

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)		David Slowinski	11D2	0
Verified (Factored)		The Grebelius Family	DCA96126985AB1D2	0
Verified (Factored)	2002-05-11	S57483	DCA96126985AB1D2	474437

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	AAC6766856584FE1	1	0	1	3
Verified	2017-10-16	Oliver Kruse	AAC6766856584FE1	1	605106	1	3
Verified	2018-01-02	ATH	AAC6766856584FE1	1	1035099	1	3

History

Date	User	Type	Result
2022-04-12	LordJulius	NF	no factor from 2^63 to 2^64
2022-04-12	LordJulius	NF	no factor from 2^62 to 2^63
2022-04-12	LordJulius	NF	no factor from 2^1 to 2^61
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-01-02	ATH	C-PRP	M1122371/2495974007288711647 : AAC6766856584FE1 PRP: Verified PRP without proof (not generated)
2017-10-16	Oliver Kruse	C-PRP	M1122371/2495974007288711647 : AAC6766856584FE1 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1122371/2495974007288711647 : AAC6766856584FE1 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12
2009-09-05	SubPrime	F-ECM	Factor: 2495974007288711647
2009-02-16	Sturle Sunde	NF	no factor from 2^60 to 2^61