4 842 883 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
203401087	9	27.6	old
296282781376513723969	21	68.0	2021-07-20 06:56:09

ECM

Digits	B1	Curves
25	50000	13 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 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	3DAD2C64183CDA5B	1	0	1	3
Verified (Factored)	2018-03-29	Oliver Kruse	3DAD2C64183CDA5B	1	1752390	1	3
Verified	2021-07-20	ATH	A832D582610815B5	2	1637986	5	3

P-1 factors

Date	Factor	B1	B2
2023-09-21	296282781376513723969	512000	275978850

History

Date	User	Type	Result
2023-09-21	USAFSS	F-PM1	Factor: 296282781376513723969 / (P-1, B1=512000, B2=275978850)
2021-07-20	Ben Delo	CERT	PRP Certification Proof certified good
2021-07-20	ATH	C-PRP	M4842883/203401087/296282781376513723969 : A832D582610815B5 PRP proof power = 7 PRP: Verified Proof certified good
2021-07-20	ATH	F-PP1	Start=2/7, B1=500000, B2=50000000, Factor: 296282781376513723969
2018-03-29	Oliver Kruse	C-PRP	M4842883/203401087 : 3DAD2C64183CDA5B PRP: Verified (Factored) PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4842883/203401087 : 3DAD2C64183CDA5B PRP: Verified (Factored) PRP without proof (not generated)