2 503 817 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
98513004431913312817	20	66.4	2012-07-27 15:28:47

ECM

Digits	B1	Curves
25	50000	24 / 280

Estimated T-Level: 20.4 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Steven Berry	4B4590DC61F04DE5	0
Verified (Factored)	1999-03-26	David Phillips	4B4590DC61F04DE5	2306093

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	36A3EB23A4FCCC72	1	0	1	3
Verified	2017-11-07	Oliver Kruse	36A3EB23A4FCCC72	1	57980	1	3

History

Date	User	Type	Result
2023-01-28	USAFSS	NF-PM1	B1=288000, B2=290589390
2022-03-10	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-07	Oliver Kruse	C-PRP	M2503817/98513004431913312817 : 36A3EB23A4FCCC72 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M2503817/98513004431913312817 : 36A3EB23A4FCCC72 PRP: Verified PRP without proof (not generated)
2012-07-27	Chang Chia-Tche	F-ECM	Factor: 98513004431913312817
2012-06-12	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-03-02	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-04	Joss	NF-PM1	B1=50000
2011-01-01	Joss	NF-PM1	B1=30000
2010-12-16	Joss	NF-PM1	B1=20000
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61