720 197 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
22753498843326400124413061269801	32	104.2	2016-05-24 09:08:28

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	B32	0
Verified (Factored)		Allan Menezes	CDBB86F413BA0B32	0
Verified (Factored)		Ken Kriesel	CDBB86F413BA0B32	0
Verified (Factored)	2015-04-11	MadPoo	CDBB86F413BA0B32	668357

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-27	Oliver Kruse	B4207CE7CAB4BEB3	1	0	1	3
Verified	2017-09-28	Oliver Kruse	B4207CE7CAB4BEB3	1	0	1	3
Verified	2017-11-09	kkmrkkblmbrbk	B4207CE7CAB4BEB3	1	412155	1	3
Unverified (Reliable)	2020-04-20	Oliver Kruse	3E6881A3E42C2F__	1	71067	5	3

P-1 factors

Date	Factor	B1	B2
2016-05-24	22753498843326400124413061269801	24000000	1200000000

History

Date	User	Type	Result
2020-04-20	Oliver Kruse	C-PRP	M720197/22753498843326400124413061269801 : 3E6881A3E42C2F__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-09	kkmrkkblmbrbk	C-PRP	M720197/22753498843326400124413061269801 : B4207CE7CAB4BEB3 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-28	Oliver Kruse	C-PRP	M720197/22753498843326400124413061269801 : B4207CE7CAB4BEB3 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M720197/22753498843326400124413061269801 : B4207CE7CAB4BEB3 PRP: Unverified (Reliable) PRP without proof (not generated)
2016-05-24	mikr	F-PM1	Factor: 22753498843326400124413061269801 / (P-1, B1=24000000, B2=1200000000, E=12)
2016-04-25	lycorn	NF	no factor from 2^64 to 2^65
2015-10-14	Gordon Spence	NF	no factor from 2^63 to 2^64
2015-10-14	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-04-11	MadPoo	C-LL	CDBB86F413BA0B32
2015-03-01	NR	NF	no factor from 2^61 to 2^62
2010-06-16	Architects Cubed	NF	no factor from 2^60 to 2^61
2008-11-29	Jayson King	NF-PM1	B1=5000000, B2=100000000, E=12
2008-10-11	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-10-11	Sturle Sunde	NF	no factor from 2^58 to 2^59