161 923 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
24759993525570257	17	54.5	old
119313890826239271272791	24	76.7	2014-12-19 13:15:13
230234895643551410142058692191	30	97.5	2019-04-27 19:34:49

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	212 / 1566

Estimated T-Level: 30.7 ⓘ

TF below 2^97 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	8F20178636B7150B	2	0	1	3
Verified (Factored)	2017-10-11	kkmrkkblmbrbk	8F20178636B7150B	2	90407	1	3
Verified	2019-04-27	ATH	27DE2378072AD523	3	149297	5	3
Verified	2019-04-28	kkmrkkblmbrbk	27DE2378072AD523	3	79163	5	3

History

Date	User	Type	Result
2021-07-08	ATH	NF-PP1	Start=2/7, B1=15000000, B2=1500000000
2019-04-28	kkmrkkblmbrbk	C-PRP	M161923/24759993525570257/119313890826239271272791/230234895643551410142058692191 : 27DE2378072AD523 PRP: Verified PRP without proof (small exponent)
2019-04-27	ATH	C-PRP	M161923/24759993525570257/119313890826239271272791/230234895643551410142058692191 : 27DE2378072AD523 PRP: Verified PRP without proof (small exponent)
2019-04-27	Niels_Mache_Nextcloud	F-ECM	Factor: 230234895643551410142058692191 / (ECM curve 1, B1=250000, B2=25000000)
2017-10-11	kkmrkkblmbrbk	C-PRP	M161923/24759993525570257/119313890826239271272791 : 8F20178636B7150B PRP: Verified PRP without proof (small exponent)
2017-09-21	Oliver Kruse	C-PRP	M161923/known_factors : 8F20178636B7150B PRP without proof (not generated)
2017-04-16	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12
2014-12-19	TJAOI	F-ECM	Factor: 119313890826239271272791 / (ECM curve 21, B1=50000, B2=5000000)