80 100 127 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: proven not-prime with Lucas-Lehmer test

No factors below 2⁷⁶

TF target 2⁷⁵

P-1

B1 =	855000
B2 =	21588750

Status	Date	User	Residue	Shift	Software
Verified	2017-07-12	GB	D01D9DCD1C30C1A3	62812364	Windows 64-bit,Prime95,v28.10,build 1
Verified	2025-10-24	SteveC	D01D9DCD1C30C1A3	9699951	Linux 64-bit,Prime95,v30.19,build 20

History

Date	User	Type	Result
2025-10-24	SteveC	C-LL	D01D9DCD1C30C1A3
2021-11-30	LordJulius	NF	no factor TF: 75-76
2017-07-12	GB	C-LL	D01D9DCD1C30C1A3
2016-07-30	Sid & Andy	NF	no factor TF: 74-75
2016-07-27	1997rj7	NF	no factor TF: 73-74
2016-06-21	Greg	NF	no factor TF: 72-73
2015-09-28	aurashift	NF-PM1	B1=855000, B2=21588750
2014-10-08	BloodIce	NF	no factor TF: 71-72
2013-07-11	SMoffat	NF	no factor TF: 70-71
2011-03-19	kagakubu	NF	no factor TF: 69-70
2011-03-15	S00030	NF	no factor TF: 68-69
2011-03-13	TeraTism	NF	no factor TF: 67-68
2011-01-09	Waritko	NF	no factor TF: 66-67
2010-12-12	Craig Meyers	NF	no factor TF: 65-66
2010-12-02	Architects Cubed	NF	no factor TF: 64-65