10 126 741 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
104897521456612541516113	24	76.5	2016-07-16 17:59:36

ECM

Digits	B1	Curves
25	50000	2 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2000-05-31	Neill Miller	0B46D43329719870	1582444
Verified (Factored)	2003-11-08	Mason Guy	0B46D43329719870	1030797

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-01-19	mrh	61B5E7E7DE43B112	1	9929426	5	3
Verified	2021-02-02	kracker	61B5E7E7DE43B112	1	1530218	5	3

History

Date	User	Type	Result
2022-02-06	ViliamF	NF	no factor from 2^67 to 2^68
2021-02-02	kracker	C-PRP	M10126741/104897521456612541516113 : 61B5E7E7DE43B112 PRP: Verified PRP without proof (not generated)
2020-01-19	mrh	C-PRP	M10126741/104897521456612541516113 : 61B5E7E7DE43B112 PRP: Verified PRP without proof (not generated)
2016-07-16	bam	F-ECM	Factor: 104897521456612541516113 / (ECM curve 1, B1=50000, B2=5000000)
2015-11-18	VictordeHollander	NF	no factor from 2^66 to 2^67
2015-04-23	Tha	NF	no factor from 2^65 to 2^66
2011-11-15	David Campeau	NF	no factor from 2^64 to 2^65
2011-08-13	James Heinrich	NF-PM1	B1=195000, B2=4338750, E=6