83 308 613 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Tested as composite (unverified): unconfirmed Lucas-Lehmer test says not-prime

TF

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	665000
B2 =	12136250

Status	Date	User	Residue	Shift
Unverified	2018-02-06	aurashift	41B0271D18CD41__	42383880

History

Date	User	Type	Result
2018-02-06	aurashift	C-LL	41B0271D18CD41__
2017-09-04	Pi_Rho	NF-PM1	B1=665000, B2=12136250
2017-02-19	TheJudger	NF	no factor from 2^75 to 2^76
2016-12-18	-Anonymous-	NF	no factor from 2^74 to 2^75
2016-12-18	-Anonymous-	NF	no factor from 2^73 to 2^74
2016-12-18	-Anonymous-	NF	no factor from 2^72 to 2^73
2016-12-18	-Anonymous-	NF	no factor from 2^71 to 2^72
2013-11-07	S04803	NF	no factor from 2^70 to 2^71
2013-08-15	america64	NF	no factor from 2^69 to 2^70
2013-02-21	Perederiy Serg N.	NF	no factor from 2^68 to 2^69
2013-02-18	Perederiy Serg N.	NF	no factor from 2^67 to 2^68
2013-02-14	Per Jessen	NF	no factor from 2^66 to 2^67
2012-09-12	Carsten Kossendey	NF	no factor from 2^65 to 2^66
2010-12-07	Architects Cubed	NF	no factor from 2^64 to 2^65