1 638 799 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
410332185477287	15	48.5	old
56829794009105608223	20	65.6	2017-12-11 13:16:38
278938587756115950791	21	67.9	2019-11-04 17:15:14

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-02	Oliver Kruse	689D4A0C9A42BB16	1	0	1	3
Verified (Factored)	2017-11-02	ATH	689D4A0C9A42BB16	1	54444	1	3
Verified (Factored)	2017-12-12	Oliver Kruse	3B928F35849D6D3D	2	929094	5	3
Verified (Factored)	2017-12-12	kkmrkkblmbrbk	3B928F35849D6D3D	2	1410263	5	3
Verified	2019-11-05	mnd9	3B928F35849D6D3D	3	664143	5	3

History

Date	User	Type	Result
2019-11-05	mnd9	C-PRP	M1638799/410332185477287/56829794009105608223/278938587756115950791 : 3B928F35849D6D3D PRP: Verified PRP without proof (not generated)
2019-11-04	TJAOI	F-ECM	Factor: 278938587756115950791 / (ECM curve 7, B1=50000, B2=5000000)
2017-12-12	kkmrkkblmbrbk	C-PRP	M1638799/410332185477287/56829794009105608223 : 3B928F35849D6D3D PRP: Verified PRP without proof (not generated)
2017-12-12	Oliver Kruse	C-PRP	M1638799/410332185477287/56829794009105608223 : 3B928F35849D6D3D PRP: Verified PRP without proof (not generated)
2017-12-11	ATH	F-ECM	Factor: 56829794009105608223 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-02	ATH	C-PRP	M1638799/410332185477287 : 689D4A0C9A42BB16 PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1638799/410332185477287 : 689D4A0C9A42BB16 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12