1 827 197 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
630204535715694943	18	59.1	old
4466975740388225609	19	62.0	2016-06-15 11:50:06
164660143631746679516329	24	77.1	2019-10-22 12:15:36

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	Shift
Verified (Factored)		John Costigan	8ECF3429C4798056	0
Verified (Factored)	1998-12-21	George S. Taylor	8ECF3429C4798056	594384

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	64654349A2E19048	2	0	1	3
Verified (Factored)	2017-11-06	bayanne	64654349A2E19048	2	1283710	1	3
Verified	2019-10-22	ATH	74B25FFEA8D34B8A	3	946480	5	3
Verified	2019-10-23	kkmrkkblmbrbk	74B25FFEA8D34B8A	3	1725794	5	3

History

Date	User	Type	Result
2019-10-23	kkmrkkblmbrbk	C-PRP	M1827197/630204535715694943/4466975740388225609/164660143631746679516329 : 74B25FFEA8D34B8A PRP: Verified PRP without proof (not generated)
2019-10-22	ATH	C-PRP	M1827197/630204535715694943/4466975740388225609/164660143631746679516329 : 74B25FFEA8D34B8A PRP: Verified PRP without proof (not generated)
2019-10-22	Chang Chia-Tche	F-ECM	Factor: 164660143631746679516329 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-06	bayanne	C-PRP	M1827197/630204535715694943/4466975740388225609 : 64654349A2E19048 PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1827197/630204535715694943/4466975740388225609 : 64654349A2E19048 PRP: Verified PRP without proof (not generated)
2016-06-15	TJAOI	F	Factor: 4466975740388225609 / TF: 61-62
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12