2 543 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
5087	4	12.3	old
106329718329660590327571143	27	86.5	old
120202769989830422569666183518726135371191	42	136.5	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	9807 / 40830

Estimated T-Level: 51.2 ⓘ

TF below 2^165 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	No proof (small exponent)	2017-09-21	Oliver Kruse	59489616C8D08014	3	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	59489616C8D08014	3	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	59489616C8D08014	3	2236	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	68AB7B77AA6CBBB1	3	323	5	3
Factored	No proof (small exponent)	2022-05-12	Jorge Coveiro	68AB7B77AA6CBBB1	1	2020	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	68AB7B77AA6CBBB1	3	933	5	3

History

Date	User	Type	Result
2025-04-10	masser	NF-PP1	Start=146/37, B1=4300000000, B2=4295700000000
2024-05-23	masser	NF-PM1	B1=100000000000, B2=47410941879551250
2024-02-03	Wentao Huang	C-PRP	M2543/5087/106329718329660590327571143/120202769989830422569666183518726135371191 : 68AB7B77AA6CBBB1
2022-05-12	Jorge Coveiro	C-PRP	M2543/5087 : 68AB7B77AA6CBBB1
2021-07-05	ViliamF	NF-PM1	B1=1000000000, B2=191000000000
2021-07-04	ViliamF	NF-PM1	B1=100000000, B2=13100000000
2020-04-17	Oliver Kruse	C-PRP	M2543/5087/106329718329660590327571143/120202769989830422569666183518726135371191 : 68AB7B77AA6CBBB1
2017-12-07	ATH	C-PRP	M2543/5087/106329718329660590327571143/120202769989830422569666183518726135371191 : 59489616C8D08014
2017-10-02	kkmrkkblmbrbk	C-PRP	M2543/5087/106329718329660590327571143/120202769989830422569666183518726135371191 : 59489616C8D08014
2017-09-21	Oliver Kruse	C-PRP	M2543/known_factors : 59489616C8D08014