1 884 121 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
1141777327	10	30.1	old
31845413143	11	34.9	2008-07-15 07:47:49
32366150272223	14	44.9	2008-08-26 20:20:13
105199760924377557170399	24	76.5	2021-10-07 10:32:23
37147423077558317295956911	26	84.9	2020-11-15 22:00:17

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	25CC82285FEFAA81	3	0	1	3
Verified (Factored)	2017-11-08	ATH	25CC82285FEFAA81	3	491284	1	3
Verified (Factored)	2020-11-16	rbanov	37AB8E111AA43A46	4	1464124	5	3
Verified	2021-10-09	JackBlock	37AB8E111AA43A46	5	383207	5	3

History

Date	User	Type	Result
2021-10-09	Chad Steenerson	CERT	PRP Certification Proof certified good
2021-10-09	JackBlock	C-PRP	M1884121/1141777327/31845413143/32366150272223/105199760924377557170399/37147423077558317295956911 : 37AB8E111AA43A46 PRP proof power = 7 PRP: Verified Proof certified good
2021-10-07	TJAOI	F-ECM	Factor: 105199760924377557170399 / (ECM curve 24, B1=50000, B2=6600000)
2020-11-16	Stirls	CERT	PRP Certification Proof certified good
2020-11-16	rbanov	C-PRP	M1884121/1141777327/31845413143/32366150272223/37147423077558317295956911 : 37AB8E111AA43A46 PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2020-11-15	MarkS	F-ECM	Factor: 37147423077558317295956911 / (ECM curve 5, B1=50000, B2=5000000, Sigma=8584982327939917)
2017-11-08	ATH	C-PRP	M1884121/1141777327/31845413143/32366150272223 : 25CC82285FEFAA81 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1884121/1141777327/31845413143/32366150272223 : 25CC82285FEFAA81 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 32366150272223
2008-07-15	J Feitsma	F	Factor: 31845413143