1 694 621 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
35281666906559	14	45.0	old
21660895415137747583	20	64.2	2017-08-17 11:41:06
193998520628779914208207	24	77.4	2018-03-03 18:01:13

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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)	2017-09-28	alpertron	A0C57EDC9E3E5C3E	2	0	1	3
Verified (Factored)	2017-10-18	Oliver Kruse	A0C57EDC9E3E5C3E	2	200107	1	3
Verified	2018-03-08	trebor	C0087C8FB7F21E6D	3	995259	5	3
Verified	2018-03-11	Oliver Kruse	C0087C8FB7F21E6D	3	706112	5	3

History

Date	User	Type	Result
2018-03-11	Oliver Kruse	C-PRP	M1694621/35281666906559/21660895415137747583/193998520628779914208207 : C0087C8FB7F21E6D PRP: Verified PRP without proof (not generated)
2018-03-08	trebor	C-PRP	M1694621/35281666906559/21660895415137747583/193998520628779914208207 : C0087C8FB7F21E6D PRP: Verified PRP without proof (not generated)
2018-03-03	Chang Chia-Tche	F-ECM	Factor: 193998520628779914208207 / (ECM curve 2, B1=50000, B2=5000000)
2017-10-18	Oliver Kruse	C-PRP	M1694621/35281666906559/21660895415137747583 : A0C57EDC9E3E5C3E PRP: Verified PRP without proof (not generated)
2017-09-28	alpertron	C-PRP	M1694621/21660895415137747583/35281666906559 : A0C57EDC9E3E5C3E PRP: Verified PRP without proof (not generated)
2017-08-17	TJAOI	F	Factor: 21660895415137747583 / TF: 64-65
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12