105 212 563 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 2⁷⁶

TF target 2⁷⁶

P-1

B1 =	434000
B2 =	21338000

Status	Proof	Date	User	Residue	Shift	Type	Base
Verified	Certified Good Power=9	2021-07-31	David Kirkby	7204890C6FF85C0D	9598102	1	3

History

Date	User	Type	Result
2021-08-01	curtisc	CERT	Proof certified good
2021-07-31	David Kirkby	C-PRP	7204890C6FF85C0D Proof Certified Good Proof Power: 9
2021-07-21	David Kirkby	NF-PM1	B1=434000, B2=21338000
2021-03-28	TheJudger	NF	no factor TF: 75-76
2021-03-28	TheJudger	NF	no factor TF: 74-75
2020-04-02	SRBase	NF	no factor TF: 73-74
2020-03-27	Will Hockensmith	NF	no factor TF: 72-73
2014-12-31	shauge	NF	no factor TF: 71-72
2014-06-27	C.D.B.	NF	no factor TF: 70-71
2014-06-15	webbert	NF	no factor TF: 69-70
2013-09-29	PED	NF	no factor TF: 68-69
2013-09-24	PED	NF	no factor TF: 67-68
2013-09-09	willmore	NF	no factor TF: 66-67
2012-05-10	LingUaan	NF	no factor TF: 65-66
2010-08-31	Torchwood Institute	NF	no factor TF: 64-65
2010-04-20	Dalos Lee	NF	no factor TF: 63-64