89 728 021 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 PRP test says not-prime

TF

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	725000
B2 =	14318750

Status	Date	User	Residue	Shift	Type	Base
Unverified	2019-03-24	William Wallace	A83C66EAC5264D__	82579119	1	3

History

Date	User	Type	Result
2019-03-24	William Wallace	C-PRP	A83C66EAC5264D__ PRP without proof (not generated)
2018-11-27	S485122	NF-PM1	B1=725000, B2=14318750, E=12
2018-11-04	TheJudger	NF	no factor from 2^75 to 2^76
2018-11-04	TheJudger	NF	no factor from 2^74 to 2^75
2017-08-06	-Anonymous-	NF	no factor from 2^73 to 2^74
2017-08-06	-Anonymous-	NF	no factor from 2^72 to 2^73
2017-08-06	-Anonymous-	NF	no factor from 2^71 to 2^72
2014-03-31	Andreas_Truetsch	NF	no factor from 2^70 to 2^71
2014-03-31	-Anonymous-	NF	no factor from 2^70 to 2^71
2014-03-30	SMoffat	NF	no factor from 2^69 to 2^70
2014-03-29	SMoffat	NF	no factor from 2^68 to 2^69
2013-07-23	Norman Ley	NF	no factor from 2^67 to 2^68
2013-03-19	SMoffat	NF	no factor from 2^66 to 2^67
2013-03-18	SMoffat	NF	no factor from 2^65 to 2^66
2010-11-11	Architects Cubed	NF	no factor from 2^64 to 2^65