141 887 311 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Tested as composite (unverified, reliable): unconfirmed PRP test says not-prime

No factors below 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	1221000
B2 =	1326484500

Status	Proof	Date	User	Residue	Shift	Type	Base
Reliable	Not Uploaded Power=10	2026-09-27	dflowers	638406903E898D__	120006338	1	3

History

Date	User	Type	Result
2026-09-27	dflowers	C-PRP	638406903E898D__ Proof Not Uploaded Proof Power: 10
2024-10-01	Luke Durant	NF-PM1	B1=1221000, B2=1326484500
2024-09-22	Vili	NF	no factor TF: 76-77
2024-07-16	SRBase	NF	no factor TF: 75-76
2024-05-06	Greg	NF	no factor TF: 68-69
2023-01-21	SRBase	NF	no factor TF: 74-75
2021-11-06	SRBase	NF	no factor TF: 73-74
2020-10-26	SRBase	NF	no factor TF: 72-73
2016-07-08	Summy	NF	no factor TF: 71-72
2016-07-07	guru	NF	no factor TF: 70-71
2016-07-07	guru	NF	no factor TF: 69-70
2016-04-13	Josh Famestad	NF	no factor TF: 68-69
2016-03-25	dbaugh	NF	no factor TF: 67-68
2015-02-22	Andrew B	NF	no factor TF: 66-67
2012-12-06	HBendtz	NF	no factor TF: 65-66
2010-12-15	Mr-Plonk	NF	no factor TF: 64-65