1 817 581 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
85599613348351	14	46.3	old
310345225139185488658247	24	78.0	2021-03-12 16:34:57
1189085596205257849526737	25	80.0	2020-12-19 09:17:13

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)	2017-10-03	Oliver Kruse	5218C038D2FA6CA9	1	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	5218C038D2FA6CA9	1	740631	1	3
Verified (Factored)	2020-12-19	mrh	D1A260D0E72146C4	2	1560609	5	3
Verified	2021-03-12	Oliver Kruse	D1A260D0E72146C4	3	1637663	5	3

History

Date	User	Type	Result
2021-03-12	dburke	CERT	PRP Certification Proof certified good
2021-03-12	Oliver Kruse	C-PRP	M1817581/85599613348351/1189085596205257849526737/310345225139185488658247 : D1A260D0E72146C4 PRP proof power = 7 PRP: Verified Proof certified good
2021-03-12	TJAOI	F-ECM	Factor: 310345225139185488658247 / (ECM curve 87, B1=50000, B2=6500000)
2020-12-19	curtisc	CERT	PRP Certification Proof certified good
2020-12-19	mrh	C-PRP	M1817581/85599613348351/1189085596205257849526737 : D1A260D0E72146C4 PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2020-12-19	_p95holder_	F-ECM	Factor: 1189085596205257849526737 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-06	kkmrkkblmbrbk	C-PRP	M1817581/85599613348351 : 5218C038D2FA6CA9 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1817581/85599613348351 : 5218C038D2FA6CA9 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12