1 284 847 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
12848471	8	23.6	old
30836329	8	24.9	2008-07-15 09:57:41
1031715720645529620113239	25	79.8	2015-01-02 18:58:09
81365976020512296727962275647	29	96.0	2018-03-16 09:32:48

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	395B5A0F810EBE4A	3	0	1	3
Verified (Factored)	2017-10-22	kkmrkkblmbrbk	395B5A0F810EBE4A	3	1279783	1	3
Verified	2018-03-16	ATH	AA1EF0D46E55BF5E	4	1217975	5	3
Verified	2018-03-20	Oliver Kruse	AA1EF0D46E55BF5E	4	96859	5	3

P-1 factors

Date	Factor	B1	B2
2015-01-02	1031715720645529620113239	300000	10000000

History

Date	User	Type	Result
2018-03-20	Oliver Kruse	C-PRP	M1284847/12848471/30836329/1031715720645529620113239/81365976020512296727962275647 : AA1EF0D46E55BF5E PRP: Verified PRP without proof (not generated)
2018-03-16	ATH	C-PRP	M1284847/12848471/30836329/1031715720645529620113239/81365976020512296727962275647 : AA1EF0D46E55BF5E PRP: Verified PRP without proof (not generated)
2018-03-16	TJAOI	F-ECM	Factor: 81365976020512296727962275647 / (ECM curve 47, B1=50000, B2=5000000)
2017-10-22	kkmrkkblmbrbk	C-PRP	M1284847/12848471/30836329/1031715720645529620113239 : 395B5A0F810EBE4A PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1284847/12848471/30836329/1031715720645529620113239 : 395B5A0F810EBE4A PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1284847/12848471/30836329/1031715720645529620113239 : 395B5A0F810EBE4A PRP without proof (not generated)
2015-01-02	alpertron	F-PM1	Factor: 1031715720645529620113239 / (P-1, B1=300000, B2=10000000, E=12)
2008-07-15	J Feitsma	F	Factor: 30836329