9 157 219 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
198173772933098929	18	57.5	old
273777812617527802338049	24	77.9	2021-11-09 01:46:33

ECM

Digits	B1	Curves
25	50000	105 / 280

Estimated T-Level: 21.9 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2020-07-31	riccardo uberti	37709D5DE2EF8BAC	1	7944579	5	3
Verified (Factored)	2020-12-19	Oliver Kruse	37709D5DE2EF8BAC	1	5483592	5	3
Verified	2021-11-09	riccardo uberti	37709D5DE2EF8BAC	2	8086441	5	3

History

Date	User	Type	Result
2021-11-27	riccardo uberti	NF-PP1	Start=6/5, B1=3000000, B2=60000000
2021-11-25	riccardo uberti	NF-PP1	Start=2/7, B1=3000000, B2=60000000
2021-11-09	Ben Delo	CERT	PRP Certification Proof certified good
2021-11-09	riccardo uberti	C-PRP	M9157219/198173772933098929/273777812617527802338049 : 37709D5DE2EF8BAC PRP proof power = 8 PRP: Verified Proof certified good
2021-11-09	riccardo uberti	F-PP1	Start=2/7, B1=2000000, B2=40000000, Factor: 273777812617527802338049
2020-12-19	alrjunior	CERT	PRP Certification Proof certified good
2020-12-19	Oliver Kruse	C-PRP	M9157219/198173772933098929 : 37709D5DE2EF8BAC PRP proof power = 8 PRP: Verified (Factored) Proof certified good
2020-07-31	riccardo uberti	C-PRP	M9157219/198173772933098929 : 37709D5DE2EF8BAC PRP: Verified (Factored) PRP without proof (not generated)