2 178 083 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
4356167	7	22.1	old
13702282568076860494367	23	73.5	2018-01-14 12:28:21

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	161 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-10	kkmrkkblmbrbk	BFD8148C6F0B07C1	1	0	1	3
Verified (Factored)	2017-10-23	Oliver Kruse	BFD8148C6F0B07C1	1	623389	1	3
Verified	2018-01-15	Yaroslav Berezhko	269BAEEE75FC7B81	2	1930109	5	3
Verified	2018-01-16	ATH	269BAEEE75FC7B81	2	1218477	5	3

History

Date	User	Type	Result
2018-01-16	ATH	C-PRP	M2178083/4356167/13702282568076860494367 : 269BAEEE75FC7B81 PRP: Verified PRP without proof (not generated)
2018-01-15	Yaroslav Berezhko	C-PRP	M2178083/4356167/13702282568076860494367 : 269BAEEE75FC7B81 PRP: Verified PRP without proof (not generated)
2018-01-14	Hexaflexagon	F-ECM	Factor: 13702282568076860494367 / (ECM curve 2, B1=50000, B2=5000000)
2017-10-23	Oliver Kruse	C-PRP	M2178083/4356167 : BFD8148C6F0B07C1 PRP: Verified PRP without proof (not generated)
2017-10-10	kkmrkkblmbrbk	C-PRP	M2178083/4356167 : BFD8148C6F0B07C1 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12