2 129 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
91216137441620511446965843907479	32	106.2	old
108068566182420711751512127807271	33	106.4	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	40830 / 40830
60	260000000	60438 / 105362

Estimated T-Level: 57.9 ⓘ

TF below 2^187 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	3AD14D0091A309EA	2	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	3AD14D0091A309EA	2	0	1	3
Verified	2017-12-07	ATH	3AD14D0091A309EA	2	809	1	3
Verified	2020-04-17	Oliver Kruse	5B76FC991DD7BE75	2	948	5	3
Verified	2024-01-27	Wentao Huang	5B76FC991DD7BE75	2	652	5	3

History

Date	User	Type	Result
2024-04-24	masser	NF-PM1	B1=100000000000, B2=51148730208816240
2024-01-27	Wentao Huang	C-PRP	M2129/108068566182420711751512127807271/91216137441620511446965843907479 : 5B76FC991DD7BE75 PRP: Verified PRP without proof (small exponent)
2020-04-17	Oliver Kruse	C-PRP	M2129/91216137441620511446965843907479/108068566182420711751512127807271 : 5B76FC991DD7BE75 PRP: Verified PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M2129/91216137441620511446965843907479/108068566182420711751512127807271 : 3AD14D0091A309EA PRP: Verified PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M2129/91216137441620511446965843907479/108068566182420711751512127807271 : 3AD14D0091A309EA PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M2129/known_factors : 3AD14D0091A309EA PRP without proof (not generated)
2016-09-08	kkmrkkblmbrbk	NF-PM1	B1=500000000, B2=50000000000, E=12