1 887 079 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
45289897	8	25.4	old
510722834719	12	38.9	2008-07-15 07:47:52
5293827911126023809049	22	72.2	2021-02-21 04:29:23

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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	43F1C72265AC4F4E	2	0	1	3
Verified (Factored)	2017-11-08	Chang Chia-Tche	43F1C72265AC4F4E	2	1833896	1	3
Verified	2021-02-21	riccardo uberti	94FCDAB82DCC6088	3	1382703	5	3

History

Date	User	Type	Result
2021-02-21	riccardo uberti	NF-PM1	B1=1000000, B2=30000000, E=12
2021-02-21	curtisc	CERT	PRP Certification Proof certified good
2021-02-21	riccardo uberti	C-PRP	M1887079/45289897/510722834719/5293827911126023809049 : 94FCDAB82DCC6088 PRP proof power = 7 PRP: Verified Proof certified good
2021-02-21	Poao	F-ECM	Factor: 5293827911126023809049 / (ECM curve 7, B1=50000, B2=5000000, Sigma=8718873265181544)
2017-11-08	Chang Chia-Tche	C-PRP	M1887079/45289897/510722834719 : 43F1C72265AC4F4E PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1887079/45289897/510722834719 : 43F1C72265AC4F4E PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-15	J Feitsma	F	Factor: 510722834719