28 901 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
95893519	8	26.5	old
3095473155663862608737	22	71.4	2009-04-04 14:30:21
1063952634383863310946981121039721496889	40	129.6	2018-01-07 11:13:40

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	669 / 4588

Estimated T-Level: 35.7 ⓘ

TF below 2^114 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-21	Oliver Kruse	3B4A214781B241B8	2	0	1	3
Verified (Factored)	2017-10-12	kkmrkkblmbrbk	3B4A214781B241B8	2	15332	1	3
Verified	2018-01-09	AdolfNor	FE9247C494E8C068	3	8816	5	3
Verified	2018-01-10	Oliver Kruse	FE9247C494E8C068	3	15081	5	3

History

Date	User	Type	Result
2023-02-21	nordi	NF-PM1	B1=3000000000, B2=925584566816910
2022-12-29	nordi	NF-PM1	B1=3000000000
2018-01-10	Oliver Kruse	C-PRP	M28901/95893519/3095473155663862608737/1063952634383863310946981121039721496889 : FE9247C494E8C068 PRP: Verified PRP without proof (small exponent)
2018-01-09	AdolfNor	C-PRP	M28901/95893519/3095473155663862608737/1063952634383863310946981121039721496889 : FE9247C494E8C068 PRP: Verified PRP without proof (small exponent)
2018-01-07	nordi	F-ECM	Factor: 1063952634383863310946981121039721496889 / (ECM curve 262, B1=3000000, B2=300000000)
2017-10-12	kkmrkkblmbrbk	C-PRP	M28901/95893519/3095473155663862608737 : 3B4A214781B241B8 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M28901/95893519/3095473155663862608737 : 3B4A214781B241B8 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M28901/95893519/3095473155663862608737 : 3B4A214781B241B8 PRP without proof (not generated)
2016-12-28	kkmrkkblmbrbk	NF-PM1	B1=500000000, B2=10000000000, E=12
2009-04-04	Matthias Wurtinger	F-ECM	Factor: 3095473155663862608737