3 721 621 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
3199076613696703	16	51.5	old
42725822313916698484097	23	75.2	2018-11-14 08:50:02

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	D039AEDA4FBF6889	1	0	1	3
Verified (Factored)	2017-12-01	Oliver Kruse	D039AEDA4FBF6889	1	2408183	1	3
Verified	2018-11-14	Chang Chia-Tche	C6F2BCA144C848B1	2	1831646	5	3
Verified	2018-11-16	pew	C6F2BCA144C848B1	2	11973	5	3

History

Date	User	Type	Result
2022-09-12	Joss	NF-PM1	B1=1000000, B2=234765300
2022-04-14	Joss	NF-PM1	B1=1000000, B2=130364850
2022-03-09	Joss	NF	no factor from 2^67 to 2^68
2018-11-16	pew	C-PRP	M3721621/3199076613696703/42725822313916698484097 : C6F2BCA144C848B1 PRP: Verified PRP without proof (not generated)
2018-11-14	Chang Chia-Tche	C-PRP	M3721621/3199076613696703/42725822313916698484097 : C6F2BCA144C848B1 PRP: Verified PRP without proof (not generated)
2018-11-14	MarkS	F-ECM	Factor: 42725822313916698484097 / (ECM curve 1, B1=50000, B2=5000000)
2017-12-01	Oliver Kruse	C-PRP	M3721621/3199076613696703 : D039AEDA4FBF6889 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3721621/3199076613696703 : D039AEDA4FBF6889 PRP: Verified PRP without proof (not generated)