27 299 533 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 Lucas-Lehmer test

TF

No factors below 2⁷⁵

TF target 2⁷⁰

P-1

B1 =	255000
B2 =	1275000

Status	Date	User	Residue	Shift
Verified	2006-02-15	C. Cooper / S. Boone	F7B6B7E418AA631A	7914869
Verified	2012-01-31	The Treachers	F7B6B7E418AA631A	14808908

History

Date	User	Type	Result
2021-10-11	TheJudger	NF	no factor from 2^74 to 2^75
2021-09-12	TheJudger	NF	no factor from 2^73 to 2^74
2021-08-23	TheJudger	NF	no factor from 2^72 to 2^73
2021-08-23	TheJudger	NF	no factor from 2^71 to 2^72
2019-09-27	-Anonymous-	NF	no factor from 2^70 to 2^71
2017-04-03	ramgeis	NF	no factor from 2^69 to 2^70
2012-01-31	The Treachers	C-LL	F7B6B7E418AA631A
2011-12-20	bcp19	NF	no factor from 2^68 to 2^69
2011-10-18	Carsten Kossendey	NF	no factor from 2^67 to 2^68