10 372 919 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 =	2000000
B2 =	2585571450

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

Status	Date	User	Residue	Shift
Verified	2001-01-21	Steve Spicer	1C4968041F8309A8	8521731
Verified	2003-11-28	Jeffrey Kirk	1C4968041F8309A8	915121

History

Date	User	Type	Result
2025-05-28	Kyle Askine	NF	no factor from 2^72 to 2^73
2024-03-24	Sid & Andy	NF-PM1	B1=2000000, B2=2585571450
2021-04-15	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-04-15	-Anonymous-	NF	no factor from 2^70 to 2^71
2020-12-01	ViliamF	NF-PM1	B1=1000000, B2=30000000
2020-08-05	ViliamF	NF	no factor from 2^69 to 2^70
2017-11-15	ramgeis	NF	no factor from 2^68 to 2^69
2017-09-25	-Anonymous-	NF	no factor from 2^67 to 2^68
2015-12-11	VictordeHollander	NF	no factor from 2^66 to 2^67
2015-09-04	Numberwang	NF-PM1	B1=110000, B2=2337500, e=6
2015-05-01	Tha	NF	no factor from 2^65 to 2^66
2013-09-26	Nesowa	NF	no factor from 2^64 to 2^65