1 268 741 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
345097553	9	28.4	old
1928486321	10	30.8	2008-07-15 09:57:29
4677986545957429407623	22	72.0	2018-01-05 12:42:19

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)	2017-09-29	Oliver Kruse	690A884EDB84782D	2	0	1	3
Verified (Factored)	2017-10-21	kkmrkkblmbrbk	690A884EDB84782D	2	1020264	1	3
Verified	2018-01-06	vasya_nyasha	1ACC7924B7E7D539	3	599418	5	3
Verified	2018-01-08	Oliver Kruse	1ACC7924B7E7D539	3	1142948	5	3

History

Date	User	Type	Result
2018-01-08	Oliver Kruse	C-PRP	M1268741/345097553/1928486321/4677986545957429407623 : 1ACC7924B7E7D539 PRP: Verified PRP without proof (not generated)
2018-01-06	vasya_nyasha	C-PRP	M1268741/345097553/1928486321/4677986545957429407623 : 1ACC7924B7E7D539 PRP: Verified PRP without proof (not generated)
2018-01-05	TJAOI	F-ECM	Factor: 4677986545957429407623 / (ECM curve 217, B1=50000, B2=5000000)
2017-10-21	kkmrkkblmbrbk	C-PRP	M1268741/345097553/1928486321 : 690A884EDB84782D PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1268741/345097553/1928486321 : 690A884EDB84782D PRP: Verified PRP without proof (not generated)
2008-07-15	J Feitsma	F	Factor: 1928486321