90 257 017 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 PRP test

No factors below 2⁷⁷

TF target 2⁷⁵

P-1

B1 =	740000
B2 =	14985000

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	PRP without proof (not generated)	2020-04-12	ATH	41FE6A7CBA40BA4A	0	1	3
Verified	Certified Good Power=9	2022-05-06	LordJulius	41FE6A7CBA40BA4A	57057029	1	3

History

Date	User	Type	Result
2024-05-21	James Heinrich	NF	no factor TF: 68-69
2022-05-06	David Cuno	CERT	Proof certified good
2022-05-06	LordJulius	C-PRP	41FE6A7CBA40BA4A Proof Certified Good Proof Power: 9
2020-04-12	ATH	C-PRP	41FE6A7CBA40BA4A
2019-01-27	TheJudger	NF	no factor TF: 76-77
2019-01-14	Ruzovej	NF-PM1	B1=740000, B2=14985000, E=12
2018-11-25	TheJudger	NF	no factor TF: 74-75
2018-11-25	TheJudger	NF	no factor TF: 75-76
2018-05-04	Carsten Kossendey	NF	no factor TF: 73-74
2016-10-12	Carsten Kossendey	NF	no factor TF: 72-73
2015-10-30	Carsten Kossendey	NF	no factor TF: 71-72
2014-09-07	Thure Duehrsen	NF	no factor TF: 70-71
2013-11-25	Carsten Kossendey	NF	no factor TF: 69-70
2012-07-18	Carsten Kossendey	NF	no factor TF: 68-69
2011-01-17	Carsten Kossendey	NF	no factor TF: 67-68
2010-11-19	Carsten Kossendey	NF	no factor TF: 66-67