84 871 481 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	705000
B2 =	13923750

Status	Date	User	Residue	Shift	Software
Unverified	2019-05-20	patgie	3963B20C51C7C1__	65185503	Windows 64-bit,Prime95,v29.5,(aka Wh4)

History

Date	User	Type	Result
2019-05-20	patgie	C-LL	3963B20C51C7C1__
2019-04-27	ATH	NF	no factor TF: 1-63
2019-04-27	ATH	NF	no factor TF: 63-64
2017-12-20	HardyP Germany	NF-PM1	B1=705000, B2=13923750
2017-06-25	TheJudger	NF	no factor TF: 75-76
2017-06-13	Brian Beuning	NF	no factor TF: 74-75
2017-05-12	-anonymous-	NF	no factor TF: 73-74
2017-02-14	Judge Hale	NF	no factor TF: 72-73
2017-02-14	Judge Hale	NF	no factor TF: 71-72
2014-11-25	wombatman	NF	no factor TF: 70-71
2014-02-09	SMoffat	NF	no factor TF: 69-70
2013-02-24	JMGarcia	NF	no factor TF: 68-69
2013-02-22	JMGarcia	NF	no factor TF: 67-68
2013-02-21	SMoffat	NF	no factor TF: 66-67
2012-08-15	Carsten Kossendey	NF	no factor TF: 65-66
2010-12-25	Architects Cubed	NF	no factor TF: 64-65