1 838 033 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
2075830357409	13	40.9	old
2857409705329865689	19	61.3	2016-04-18 11:42:33
18369667426832819401	20	64.0	2015-09-01 20:18:30

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	110 / 640

Estimated T-Level: 25.9 ⓘ

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	2017-10-05	Oliver Kruse	D9E11B7D77976528	3	0	1	3
Verified	2017-11-11	kkmrkkblmbrbk	D9E11B7D77976528	3	1528154	1	3

P-1 factors

Date	Factor	B1	B2
2015-09-01	18369667426832819401	500000	15000000

History

Date	User	Type	Result
2017-11-11	kkmrkkblmbrbk	C-PRP	M1838033/2075830357409/2857409705329865689/18369667426832819401 : D9E11B7D77976528 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1838033/2075830357409/18369667426832819401/2857409705329865689 : D9E11B7D77976528 PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1838033/2075830357409/18369667426832819401/2857409705329865689 : D9E11B7D77976528 PRP without proof (not generated)
2016-04-18	TJAOI	F	Factor: 2857409705329865689 / TF: 61-62
2015-09-01	alpertron	F-PM1	Factor: 18369667426832819401 / (P-1, B1=500000, B2=15000000, E=12)