249 211 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
16447927	8	24.0	old
19804156092818985646068169	26	84.0	2017-07-14 09:28:54
4231311287188684023882673097	28	91.8	2020-11-14 20:32:16

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	448 / 640

Estimated T-Level: 28.5 ⓘ

TF below 2^90 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	F5C3A10ACD8CA3EA	2	0	1	3
Verified (Factored)	2017-10-12	kkmrkkblmbrbk	F5C3A10ACD8CA3EA	2	192082	1	3
Verified (Factored)	2020-04-17	Oliver Kruse	B708F5061AAB6AF3	2	134350	5	3
Verified	2020-11-15	mrh	B708F5061AAB6AF3	3	12206	5	3

History

Date	User	Type	Result
2022-04-18	Oliver Kruse	NF-PM1	B1=30000000, B2=10120247026890
2021-08-09	Oliver Kruse	NF-PM1	B1=30000000, B2=3000000000, E=24
2020-11-15	Ben Delo	CERT	PRP Certification Proof certified good
2020-11-15	mrh	C-PRP	M249211/16447927/19804156092818985646068169/4231311287188684023882673097 : B708F5061AAB6AF3 PRP proof power = 5 PRP: Verified Proof certified good
2020-11-14	_p95holder_	F-ECM	Factor: 4231311287188684023882673097 / (ECM curve 7, B1=250000, B2=25000000)
2020-04-17	Oliver Kruse	C-PRP	M249211/16447927/19804156092818985646068169 : B708F5061AAB6AF3 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M249211/16447927/19804156092818985646068169 : F5C3A10ACD8CA3EA PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M249211/16447927/19804156092818985646068169 : F5C3A10ACD8CA3EA PRP: Verified (Factored) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M249211/16447927/19804156092818985646068169 : F5C3A10ACD8CA3EA PRP without proof (not generated)
2017-07-14	TJAOI	F-ECM	Factor: 19804156092818985646068169 / (ECM curve 43, B1=250000, B2=25000000)