1 156 483 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
171611386679585699969	21	67.2	2015-05-19 17:15:17

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)		David Slowinski	3A3	0
Verified (Factored)		David Willmore	58A80E0FBA9143A3	0
Verified (Factored)		The Grebelius Family	58A80E0FBA9143A3	0

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	630864F27C294B5B	1	0	1	3
Verified	2017-10-17	Oliver Kruse	630864F27C294B5B	1	765745	1	3
Verified	2018-01-03	ATH	630864F27C294B5B	1	667153	1	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-01-03	ATH	C-PRP	M1156483/171611386679585699969 : 630864F27C294B5B PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1156483/171611386679585699969 : 630864F27C294B5B PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1156483/171611386679585699969 : 630864F27C294B5B PRP: Verified PRP without proof (not generated)
2015-05-19	Jason U	F-ECM	Factor: 171611386679585699969 / (ECM curve 2, B1=50000, B2=5000000)
2015-01-10	lycorn	NF	no factor from 2^64 to 2^65
2014-12-28	Matthias Wurtinger	NF	no factor from 2^63 to 2^64
2012-10-07	dbaugh	NF	no factor from 2^62 to 2^63
2012-02-03	markr	NF-PM1	B1=500000, B2=10000000, E=12
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61