2 493 221 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
36270276126456778033	20	65.0	2012-07-06 06:44:16

ECM

Digits	B1	Curves
25	50000	216 / 280

Estimated T-Level: 23.9 ⓘ

TF below 2^74 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Peter Joachim	2D39C6C58F10FA99	0
Verified (Factored)	1999-05-23	eleftherios argyropoulos	2D39C6C58F10FA99	179739

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-14	Oliver Kruse	8B468FB55A0DF012	1	1707364	5	3
Verified	2017-11-30	storm5510	8B468FB55A0DF012	1	598741	5	3

History

Date	User	Type	Result
2022-03-10	LordJulius	NF	no factor from 2^1 to 2^60
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-11-30	storm5510	C-PRP	M2493221/36270276126456778033 : 8B468FB55A0DF012 PRP: Verified PRP without proof (not generated)
2017-10-14	Oliver Kruse	C-PRP	M2493221/36270276126456778033 : 8B468FB55A0DF012 PRP: Verified PRP without proof (not generated)
2012-07-06	soldcake	F-ECM	Factor: 36270276126456778033
2012-06-11	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-01-24	Oscar Östlin	NF-PM1	B1=95000, B2=1971250, E=6
2010-12-22	Joss	NF-PM1	B1=20000
2009-01-11	Sturle Sunde	NF	no factor from 2^60 to 2^61