131 671 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
2106737	7	21.0	old
1477085279	10	30.5	2008-07-26 12:48:55
192124733138749346187536057	27	87.3	2018-06-08 22:35:12

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	206 / 1566

Estimated T-Level: 30.7 ⓘ

TF below 2^97 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	BA87C590D268FDD0	2	0	1	3
Verified (Factored)	2017-10-13	kkmrkkblmbrbk	BA87C590D268FDD0	2	56567	1	3
Verified	2018-06-09	Daniil Tsarkov	102266BC6FD61F2D	3	99349	5	3
Verified	2018-06-10	Oliver Kruse	102266BC6FD61F2D	3	10347	5	3

History

Date	User	Type	Result
2018-06-10	Oliver Kruse	C-PRP	M131671/2106737/1477085279/192124733138749346187536057 : 102266BC6FD61F2D PRP: Verified PRP without proof (small exponent)
2018-06-09	Daniil Tsarkov	C-PRP	M131671/2106737/1477085279/192124733138749346187536057 : 102266BC6FD61F2D PRP: Verified PRP without proof (small exponent)
2018-06-08	Yxinity	F-ECM	Factor: 192124733138749346187536057 / (ECM curve 2, B1=250000, B2=25000000)
2017-10-13	kkmrkkblmbrbk	C-PRP	M131671/2106737/1477085279 : BA87C590D268FDD0 PRP: Verified PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M131671/2106737/1477085279 : BA87C590D268FDD0 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M131671/2106737/1477085279 : BA87C590D268FDD0 PRP without proof (not generated)
2017-03-23	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12
2008-07-26	J Feitsma	F	Factor: 1477085279