104 001 481 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 2⁷⁶

P-1

B1 =	865000
B2 =	17948750

Status	Date	User	Residue	Shift
Unverified	2017-10-02	Qingkong	A9EB0C8CDD89E9__	58083952

History

Date	User	Type	Result
2017-10-02	Qingkong	C-LL	A9EB0C8CDD89E9__
2016-11-17	Qingkong	NF-PM1	B1=865000, B2=17948750, E=6
2015-07-12	Craig Meyers	NF	no factor from 2^75 to 2^76
2015-07-12	Craig Meyers	NF	no factor from 2^74 to 2^75
2015-07-12	Craig Meyers	NF	no factor from 2^73 to 2^74
2015-07-12	Craig Meyers	NF	no factor from 2^72 to 2^73
2015-07-12	Craig Meyers	NF	no factor from 2^71 to 2^72
2015-07-12	Craig Meyers	NF	no factor from 2^70 to 2^71
2014-10-10	SMoffat	NF	no factor from 2^69 to 2^70
2014-07-16	Preben S	NF	no factor from 2^68 to 2^69
2014-05-11	CSLatDD	NF	no factor from 2^67 to 2^68
2013-09-04	g0b	NF	no factor from 2^66 to 2^67
2012-05-03	sasaki3	NF	no factor from 2^65 to 2^66
2010-08-25	Torchwood Institute	NF	no factor from 2^64 to 2^65
2010-04-18	linded	NF	no factor from 2^63 to 2^64