97 642 261 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁷

TF target 2⁷⁶

P-1

B1 =	10000000
B2 =	100000000

Status	Date	User	Residue	Shift
Unverified	2021-04-23	John Airey	9FCEAB678B2605__	45549365

Status	Date	User	Residue	Shift	Type	Base
Verified	2020-11-05	ky0uraku	FC2F51F024549FB3	0	1	3

History

Date	User	Type	Result
2021-04-23	John Airey	C-LL	9FCEAB678B2605__
2020-11-05	Ben Delo	CERT	PRP Certification CERT proof power = 9 Proof certified good
2020-11-05	ky0uraku	C-PRP	FC2F51F024549FB3 PRP proof power = 9 PRP: Verified Proof certified good
2020-11-03	ky0uraku	NF-PM1	B1=10000000, B2=100000000
2020-02-27	Architects Cubed	NF	no factor from 2^76 to 2^77
2020-02-07	Architects Cubed	NF	no factor from 2^75 to 2^76
2019-11-15	La Güira	NF	no factor from 2^74 to 2^75
2019-10-21	Ryan Propper	NF-PM1	B1=915000, B2=20816250, E=6
2019-10-20	George Woltman	NF	no factor from 2^73 to 2^74
2019-03-27	Niels_Mache_Nextcloud	NF	no factor from 2^72 to 2^73
2019-01-05	Niels_Mache_Nextcloud	NF	no factor from 2^71 to 2^72
2014-12-01	CSLatDD	NF	no factor from 2^70 to 2^71
2014-06-16	Preben S	NF	no factor from 2^69 to 2^70
2014-05-31	kutens	NF	no factor from 2^68 to 2^69
2014-03-28	arnaud	NF	no factor from 2^67 to 2^68
2014-03-26	Andreas_Truetsch	NF	no factor from 2^66 to 2^67
2014-03-23	Andreas_Truetsch	NF	no factor from 2^65 to 2^66
2011-01-12	Architects Cubed	NF	no factor from 2^64 to 2^65