7 522 111 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁷⁰

TF target 2⁶⁷

Factored

Factor	Digits	Bits	Date
459747803755929977209	21	68.6	2020-06-01 04:52:28

ECM

Digits	B1	Curves
25	50000	6 / 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	Shift	Software
Factored	1999-07-04	C. Cooper / S. Boone	77A053EEA7CB26B1	2115160	Windows,Prime95,v18,NT service,(aka WU5)
Factored	2002-04-28	george brunton	77A053EEA7CB26B1	6724679	Windows,Prime95,v21,(aka WX1)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2020-06-04	Luigi Morelli	7BDE0CCA8E44C3C1	1	5321504	5	3
Verified	PRP without proof (not generated)	2020-06-05	marssystems	7BDE0CCA8E44C3C1	1	4969208	5	3

History

Date	User	Type	Result
2025-10-17	Sid & Andy	NF-PM1	B1=2500000, B2=3943416750
2025-06-18	Greg	F	Factor: 459747803755929977209 / TF: 68-70
2020-06-05	marssystems	C-PRP	M7522111/459747803755929977209 : 7BDE0CCA8E44C3C1
2020-06-04	Luigi Morelli	C-PRP	M7522111/459747803755929977209 : 7BDE0CCA8E44C3C1
2020-06-01	chuenkit	F	Factor: 459747803755929977209 / TF: 68-69*
2018-07-31	ramgeis	NF	no factor TF: 67-68
2016-09-23	Gordon Spence	NF	no factor TF: 66-67
2015-06-09	VictordeHollander	NF	no factor TF: 65-66
2013-11-30	David Campeau	NF	no factor TF: 64-65
2013-10-18	Nesowa	NF	no factor TF: 63-64
2012-05-03	James Heinrich	NF-PM1	B1=145000, B2=3153750, E=6
2002-04-28	-anonymous-	C-LL	77A053EEA7CB26B1
2002-02-17	-anonymous-	NF-PM1	B1=35000, B2=402500
2002-02-03	-anonymous-	NF-PM1	B1=35000, B2=402500
1999-07-04	curtisc	C-LL	77A053EEA7CB26B1
1998-08-09	-anonymous-	NF	no factor TF: 1-63