10 407 827 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 2⁷³

TF target 2⁶⁸

P-1

B1 =	15000000
B2 =	77030592870

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2000-09-29	bill trousdale	921238835C399DAE	7784968
Verified	2004-09-16	Shane Sanford	921238835C399DAE	8101339

History

Date	User	Type	Result
2025-05-16	Andrew B	NF	no factor from 2^72 to 2^73
2022-01-17	Luminescence	NF-PM1	B1=15000000, B2=77030592870
2021-10-26	SRBase	NF	no factor from 2^71 to 2^72
2021-08-11	SRBase	NF	no factor from 2^70 to 2^71
2020-08-09	ViliamF	NF	no factor from 2^69 to 2^70
2017-11-03	ramgeis	NF	no factor from 2^68 to 2^69
2017-09-26	-Anonymous-	NF	no factor from 2^67 to 2^68
2015-12-11	VictordeHollander	NF	no factor from 2^66 to 2^67
2015-05-03	Tha	NF	no factor from 2^65 to 2^66
2013-12-04	sasaki	NF	no factor from 2^64 to 2^65
2013-06-22	Nesowa	NF-PM1	B1=130000, B2=2567500, E=6