1 879 789 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
56393671	8	25.7	old
216026765696270593417	21	67.5	2022-05-12 09:17:23
7125700759440996696407	22	72.6	2020-08-09 18:44:33
2975424515145393439928753	25	81.3	2020-10-01 21:28:05

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)	2017-10-04	Oliver Kruse	38A3B67D64273532	1	0	1	3
Verified (Factored)	2017-11-08	Chang Chia-Tche	38A3B67D64273532	1	249763	1	3
Verified (Factored)	2020-08-09	storm5510	A53575665AB1C253	2	742771	5	3
Verified (Factored)	2020-10-02	xyuzyz	A53575665AB1C253	3	1411080	5	3
Verified	2022-05-12	aperson1	A53575665AB1C253	4	925487	5	3

History

Date	User	Type	Result
2022-05-12	Mike_2P-1	CERT	PRP Certification Proof certified good
2022-05-12	aperson1	C-PRP	M1879789/56393671/216026765696270593417/7125700759440996696407/2975424515145393439928753 : A53575665AB1C253 PRP proof power = 7 PRP: Verified Proof certified good
2022-05-12	TJAOI	F-ECM	Factor: 216026765696270593417 / (ECM curve 19, B1=50000, B2=7500000)
2020-10-02	xyuzyz	C-PRP	M1879789/56393671/7125700759440996696407/2975424515145393439928753 : A53575665AB1C253 PRP: Verified (Factored) PRP without proof (not generated)
2020-10-01	_p95holder_	F-ECM	Factor: 2975424515145393439928753 / (ECM curve 6, B1=50000, B2=5000000)
2020-08-10	Ryan Propper	CERT	PRP Certification Proof certified good
2020-08-09	storm5510	C-PRP	M1879789/56393671/7125700759440996696407 : A53575665AB1C253 PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2020-08-09	MarkS	F-ECM	Factor: 7125700759440996696407 / (ECM curve 2, B1=50000, B2=5000000, Sigma=4260278752695053)
2017-11-08	Chang Chia-Tche	C-PRP	M1879789/56393671 : 38A3B67D64273532 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1879789/56393671 : 38A3B67D64273532 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12