1 981 471 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
28755107153	11	34.7	old
12354620055687276363817	23	73.4	2022-05-23 10:03:36

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	58 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	AFD49125B8175E9A	1	0	1	3
Verified (Factored)	2017-11-12	kkmrkkblmbrbk	AFD49125B8175E9A	1	496262	1	3
Verified	2022-05-23	aperson1	4139B2564D643534	2	1397725	5	3
Verified	2022-05-26	_p95holder_	4139B2564D643534	2	1545779	5	3

History

Date	User	Type	Result
2022-08-13	USAFSS	NF-PM1	B1=132000, B2=134381520
2022-05-26	_p95holder_	C-PRP	M1981471/28755107153/12354620055687276363817 : 4139B2564D643534 PRP: Verified PRP without proof (not generated)
2022-05-23	DavidtDillon	CERT	PRP Certification Proof certified good
2022-05-23	aperson1	C-PRP	M1981471/28755107153/12354620055687276363817 : 4139B2564D643534 PRP proof power = 7 PRP: Verified Proof certified good
2022-05-23	_p95holder_	F-ECM	Factor: 12354620055687276363817 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-12	kkmrkkblmbrbk	C-PRP	M1981471/28755107153 : AFD49125B8175E9A PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1981471/28755107153 : AFD49125B8175E9A PRP: Verified PRP without proof (not generated)