440 177 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
2641063	7	21.3	old
53523834231785299488083614772411397914057	41	135.3	2014-11-21 15:50:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-24	Oliver Kruse	6F48C54366F8AAF5	2	0	1	3
Verified	2017-10-13	Oliver Kruse	6F48C54366F8AAF5	2	96770	1	3
Verified	2017-12-16	ATH	6F48C54366F8AAF5	2	23215	1	3
Unverified (Reliable)	2020-04-18	Oliver Kruse	091386671F7376__	2	161337	5	3

P-1 factors

Date	Factor	B1	B2
2014-11-21	53523834231785299488083614772411397914057	3000000	100000000

History

Date	User	Type	Result
2021-08-05	ViliamF	NF-PM1	B1=30000000, B2=3930000000
2020-04-18	Oliver Kruse	C-PRP	M440177/2641063/53523834231785299488083614772411397914057 : 091386671F7376__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-12-16	ATH	C-PRP	M440177/2641063/53523834231785299488083614772411397914057 : 6F48C54366F8AAF5 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-13	Oliver Kruse	C-PRP	M440177/2641063/53523834231785299488083614772411397914057 : 6F48C54366F8AAF5 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-24	Oliver Kruse	C-PRP	M440177/2641063/53523834231785299488083614772411397914057 : 6F48C54366F8AAF5 PRP without proof (not generated)
2014-11-21	alpertron	F-PM1	Factor: 53523834231785299488083614772411397914057 / (P-1, B1=3000000, B2=100000000, E=12)