1 974 373 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
720091295369197767409	21	69.3	2008-11-21 11:32:20
30017043080383024156567	23	74.7	2021-12-29 06:36:20

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	56 / 640

Estimated T-Level: 25.4 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Chris Martin	3D8657F6F08DFF93	0
Verified (Factored)		Sturle Sunde	3D8657F6F08DFF93	0

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	81A0E50E1B1F3798	1	0	1	3
Verified (Factored)	2017-11-12	kkmrkkblmbrbk	81A0E50E1B1F3798	1	647938	1	3
Verified	2021-12-31	_p95holder_	674A672A785881F1	2	1735067	5	3
Verified	2022-01-04	Joe S.	674A672A785881F1	2	1487127	5	3

History

Date	User	Type	Result
2022-08-12	USAFSS	NF-PM1	B1=192000, B2=211179150
2022-01-04	Ron LeShane	CERT	PRP Certification Proof certified good
2022-01-04	Joe S.	C-PRP	M1974373/720091295369197767409/30017043080383024156567 : 674A672A785881F1 PRP proof power = 7 PRP: Verified Proof certified good
2021-12-31	_p95holder_	C-PRP	M1974373/720091295369197767409/30017043080383024156567 : 674A672A785881F1 PRP: Verified PRP without proof (not generated)
2021-12-29	_p95holder_	F-ECM	Factor: 30017043080383024156567 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-12	kkmrkkblmbrbk	C-PRP	M1974373/720091295369197767409 : 81A0E50E1B1F3798 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1974373/720091295369197767409 : 81A0E50E1B1F3798 PRP: Verified PRP without proof (not generated)
2008-11-21	oodaira	F-ECM	Factor: 720091295369197767409