1 995 073 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
156475602384169	15	47.2	old
64510969282332611783	20	65.8	2019-05-03 01:24:12

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	59 / 640

Estimated T-Level: 25.5 ⓘ

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

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	A5FC9411617FC8A7	1	0	1	3
Verified (Factored)	2017-11-13	kkmrkkblmbrbk	A5FC9411617FC8A7	1	1538621	1	3
Verified	2019-05-03	ATH	C6F9A5128C866A9A	2	1030382	5	3
Verified	2019-05-07	Luigi Morelli	C6F9A5128C866A9A	2	1210440	5	3

History

Date	User	Type	Result
2022-08-15	USAFSS	NF-PM1	B1=132000, B2=134381520
2019-05-07	Luigi Morelli	C-PRP	M1995073/156475602384169/64510969282332611783 : C6F9A5128C866A9A PRP: Verified PRP without proof (not generated)
2019-05-03	ATH	C-PRP	M1995073/156475602384169/64510969282332611783 : C6F9A5128C866A9A PRP: Verified PRP without proof (not generated)
2019-05-03	MarkS	F-ECM	Factor: 64510969282332611783 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-13	kkmrkkblmbrbk	C-PRP	M1995073/156475602384169 : A5FC9411617FC8A7 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1995073/156475602384169 : A5FC9411617FC8A7 PRP: Verified PRP without proof (not generated)