9 300 451 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 2⁷²

TF target 2⁶⁸

P-1

B1 =	2000000
B2 =	4771857090

ECM

Digits	B1	Curves
25	50000	3 / 280

Estimated T-Level: 20.1 ⓘ

Status	Date	User	Residue	Shift
Verified	2000-03-15	Sam Watts	A4B5AF74A122D719	4629889
Verified	2003-05-04	Knut Andreas Brungot	A4B5AF74A122D719	7732188

History

Date	User	Type	Result
2022-12-02	Tha	NF-PM1	B1=2000000, B2=4771857090
2019-06-15	USAFSS	NF-PM1	B1=535000, B2=16718750, E=12
2017-04-11	snme2pm1	NF	no factor from 2^71 to 2^72
2017-04-11	snme2pm1	NF	no factor from 2^70 to 2^71
2017-04-11	snme2pm1	NF	no factor from 2^69 to 2^70
2017-04-11	snme2pm1	NF	no factor from 2^68 to 2^69
2017-04-11	snme2pm1	NF	no factor from 2^67 to 2^68
2016-05-09	snme2pm1	NF	no factor from 2^66 to 2^67
2015-05-08	VictordeHollander	NF	no factor from 2^65 to 2^66
2013-09-06	Nesowa	NF	no factor from 2^64 to 2^65
2012-05-21	Squeeky_Squirrel	NF-PM1	B1=110000, B2=2035000, E=6