242 161 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
5902633691953	13	42.4	old
474355543195384964387881	24	78.7	2014-08-15 10:43:29
17130779324234840014001389399	29	93.8	2021-05-05 01:33:03

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	172 / 1566

Estimated T-Level: 30.5 ⓘ

TF below 2^96 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	A803B0E0BEA7D470	2	0	1	3
Verified (Factored)	2017-10-12	kkmrkkblmbrbk	A803B0E0BEA7D470	2	76176	1	3
Verified (Factored)	2020-04-17	Oliver Kruse	72A9DAEB7DB6BFCA	2	14306	5	3
Verified	2021-05-05	mikr	72A9DAEB7DB6BFCA	3	102252	5	3
Verified	2021-05-05	XZT	72A9DAEB7DB6BFCA	3	39347	5	3

History

Date	User	Type	Result
2022-04-09	Oliver Kruse	NF-PM1	B1=30000000, B2=10120247026890
2021-08-09	Oliver Kruse	NF-PM1	B1=30000000, B2=3000000000, E=24
2021-05-05	Ben Delo	CERT	PRP Certification Proof certified good
2021-05-05	XZT	C-PRP	M242161/5902633691953/474355543195384964387881/17130779324234840014001389399 : 72A9DAEB7DB6BFCA PRP proof power = 5 PRP: Verified Proof certified good
2021-05-05	curtisc	CERT	PRP Certification Proof certified good
2021-05-05	mikr	C-PRP	M242161/5902633691953/474355543195384964387881/17130779324234840014001389399 : 72A9DAEB7DB6BFCA PRP proof power = 5 PRP: Verified Proof certified good
2021-05-05	_p95holder_	F-ECM	Factor: 17130779324234840014001389399 / (ECM curve 7, B1=250000, B2=25000000)
2020-04-17	Oliver Kruse	C-PRP	M242161/5902633691953/474355543195384964387881 : 72A9DAEB7DB6BFCA PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M242161/5902633691953/474355543195384964387881 : A803B0E0BEA7D470 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M242161/5902633691953/474355543195384964387881 : A803B0E0BEA7D470 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M242161/5902633691953/474355543195384964387881 : A803B0E0BEA7D470 PRP without proof (not generated)
2014-08-15	TJAOI	F-ECM	Factor: 474355543195384964387881