1 964 659 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
113950223	9	26.8	old
2142201304513	13	41.0	2008-07-15 07:48:45
2871582950246945708021469878076620907631	40	131.1	2022-10-31 18:52:52

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	56 / 640

Estimated T-Level: 25.4 ⓘ

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	504FEFA7102AE7D0	2	0	1	3
Verified (Factored)	2017-11-11	ATH	504FEFA7102AE7D0	2	1405722	1	3
Verified	2022-10-31	Kevin_9611	A48CAB7156E3A652	3	1752831	5	3

P-1 factors

Date	Factor	B1	B2
2022-10-31	2871582950246945708021469878076620907631	650000	730452492

History

Date	User	Type	Result
2022-10-31	R. Forsén	CERT	PRP Certification Proof certified good
2022-10-31	Kevin_9611	C-PRP	M1964659/113950223/2142201304513/2871582950246945708021469878076620907631 : A48CAB7156E3A652 PRP proof power = 7 PRP: Verified Proof certified good
2022-10-31	USAFSS	F-PM1	Factor: 2871582950246945708021469878076620907631 / (P-1, B1=650000, B2=730452492)
2022-08-12	USAFSS	NF-PM1	B1=132000, B2=134381520
2017-11-11	ATH	C-PRP	M1964659/113950223/2142201304513 : 504FEFA7102AE7D0 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1964659/113950223/2142201304513 : 504FEFA7102AE7D0 PRP: Verified (Factored) PRP without proof (not generated)
2008-07-15	J Feitsma	F	Factor: 2142201304513