4 481 677 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
478454873167	12	38.8	old
317211525618556806089	21	68.1	2019-02-07 04:38:09

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	A06D6F5DA3F420A2	1	0	1	3
Verified (Factored)	2018-02-15	ATH	A06D6F5DA3F420A2	1	4195944	1	3
Verified	2019-02-11	-Anonymous-	BA7F08BB4D1AFECF	2	3959281	5	3
Verified	2019-02-11	ATH	BA7F08BB4D1AFECF	2	3119842	5	3

History

Date	User	Type	Result
2023-07-22	USAFSS	NF-PM1	B1=336000, B2=220317240
2019-02-11	ATH	C-PRP	M4481677/478454873167/317211525618556806089 : BA7F08BB4D1AFECF PRP: Verified PRP without proof (not generated)
2019-02-11	-Anonymous-	C-PRP	M4481677/478454873167/317211525618556806089 : BA7F08BB4D1AFECF PRP: Verified PRP without proof (not generated)
2019-02-07	ATH	F-ECM	Factor: 317211525618556806089 / (ECM curve 1, B1=50000, B2=5000000, Sigma=5031630358333678)
2018-02-15	ATH	C-PRP	M4481677/478454873167 : A06D6F5DA3F420A2 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4481677/478454873167 : A06D6F5DA3F420A2 PRP: Verified PRP without proof (not generated)