1 954 153 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
244696806208020159641	21	67.7	2022-04-17 11:24:25
1495731537401131671541903	25	80.3	2011-05-08 03:21:18

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John R Pierce	B514C962009CFC23	0
Verified (Factored)	1998-12-27	Kerry Nice	B514C962009CFC23	322151

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	293FB4867BB17035	1	0	1	3
Verified (Factored)	2017-11-11	ATH	293FB4867BB17035	1	704040	1	3
Verified	2022-04-19	_p95holder_	E50A3F79FCE8540B	2	705004	5	3
Verified	2022-04-23	XZT	E50A3F79FCE8540B	2	1338439	5	3

History

Date	User	Type	Result
2022-04-23	curtisc	CERT	PRP Certification Proof certified good
2022-04-23	XZT	C-PRP	M1954153/1495731537401131671541903/244696806208020159641 : E50A3F79FCE8540B PRP proof power = 7 PRP: Verified Proof certified good
2022-04-19	_p95holder_	C-PRP	M1954153/1495731537401131671541903/244696806208020159641 : E50A3F79FCE8540B PRP: Verified PRP without proof (not generated)
2022-04-17	_p95holder_	F-ECM	Factor: 244696806208020159641 / (ECM curve 7, B1=50000, B2=5000000)
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-11	ATH	C-PRP	M1954153/1495731537401131671541903 : 293FB4867BB17035 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1954153/1495731537401131671541903 : 293FB4867BB17035 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2011-05-08	kurly	F-PM1	Factor: 1495731537401131671541903
2010-01-16	S485122	NF	no factor from 2^60 to 2^61