1 663 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
16631	5	14.0	old
6013409	7	22.5	old
5958582126199	13	42.4	old
234340138207259893603519423288297	33	107.5	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	40830 / 40830
60	260000000	105362 / 105362
65	800000000	155640 / 194238

Estimated T-Level: 64.0 ⓘ

TF below 2^208 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	5D0711F2C0B0F3E1	4	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	5D0711F2C0B0F3E1	4	0	1	3
Verified	2017-12-07	ATH	5D0711F2C0B0F3E1	4	1625	1	3
Verified	2020-04-17	Oliver Kruse	103BC2BB744C2644	4	443	5	3
Verified	2020-08-12	_p95holder_	103BC2BB744C2644	4	1303	5	3

History

Date	User	Type	Result
2024-03-02	masser	NF-PM1	B1=250000000000, B2=378945708521480100
2021-07-22	ViliamF	NF-PP1	Start=2/7, B1=1000000000, B2=221000000000
2020-08-12	_p95holder_	C-PRP	M1663/16631/6013409/5958582126199/234340138207259893603519423288297 : 103BC2BB744C2644 PRP: Verified PRP without proof (small exponent)
2020-04-17	Oliver Kruse	C-PRP	M1663/16631/6013409/5958582126199/234340138207259893603519423288297 : 103BC2BB744C2644 PRP: Verified PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M1663/16631/6013409/5958582126199/234340138207259893603519423288297 : 5D0711F2C0B0F3E1 PRP: Verified PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M1663/16631/6013409/5958582126199/234340138207259893603519423288297 : 5D0711F2C0B0F3E1 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M1663/known_factors : 5D0711F2C0B0F3E1 PRP without proof (not generated)
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12