80 837 851 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 =	680000
B2 =	13090000

Status	Date	User	Residue	Shift
Unverified	2018-07-27	Ron LeShane	7E19D352F5701E__	11425343

History

Date	User	Type	Result
2025-09-28	ElectricBill	NF	no factor from 2^75 to 2^76
2024-08-21	tbusby	NF	no factor from 2^74 to 2^75
2024-08-21	tbusby	NF	no factor from 2^73 to 2^74
2024-08-21	tbusby	NF	no factor from 2^72 to 2^73
2024-08-21	tbusby	NF	no factor from 2^71 to 2^72
2018-07-27	Ron LeShane	C-LL	7E19D352F5701E__
2017-03-01	DeadKings	NF-PM1	B1=680000, B2=13090000
2016-09-05	-Anonymous-	NF	no factor from 2^74 to 2^75
2016-09-05	-Anonymous-	NF	no factor from 2^73 to 2^74
2016-09-05	-Anonymous-	NF	no factor from 2^72 to 2^73
2016-09-05	-Anonymous-	NF	no factor from 2^71 to 2^72
2013-01-29	Smok_bmv	NF	no factor from 2^70 to 2^71
2013-01-29	Smok_bmv	NF	no factor from 2^69 to 2^70
2013-01-29	Smok_bmv	NF	no factor from 2^68 to 2^69
2011-02-11	searchingforprimes	NF	no factor from 2^67 to 2^68
2011-02-03	-Anonymous-	NF	no factor from 2^66 to 2^67
2011-02-02	forrest-lumpkin	NF	no factor from 2^65 to 2^66
2010-12-11	Architects Cubed	NF	no factor from 2^64 to 2^65