1 511 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 4 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
3023	4	11.6	old
3828330041	10	31.8	old
139697744516810591	18	57.0	old
2761697628956368449233082210462148759	37	121.1	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	156492 / 194238

Estimated T-Level: 64.0 ⓘ

TF below 2^208 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	4076E3BDA8B4D4A3	4	0	1	3
Verified	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	4076E3BDA8B4D4A3	4	0	1	3
Verified	No proof (small exponent)	2017-12-07	ATH	4076E3BDA8B4D4A3	4	663	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	8172D0158D1FF718	4	1326	5	3
Verified	No proof (small exponent)	2020-08-12	_p95holder_	8172D0158D1FF718	4	696	5	3
Factored	No proof (small exponent)	2022-05-12	Jorge Coveiro	8172D0158D1FF718	1	778	5	3

History

Date	User	Type	Result
2022-05-12	Jorge Coveiro	C-PRP	M1511/3023 : 8172D0158D1FF718
2021-07-21	ViliamF	NF-PP1	Start=2/7, B1=1000000000, B2=221000000000
2021-03-27	nordi	NF-PM1	B1=1000000000000, B2=2232843418649129478
2020-08-12	_p95holder_	C-PRP	M1511/3023/3828330041/139697744516810591/2761697628956368449233082210462148759 : 8172D0158D1FF718
2020-04-17	Oliver Kruse	C-PRP	M1511/3023/3828330041/139697744516810591/2761697628956368449233082210462148759 : 8172D0158D1FF718
2017-12-07	ATH	C-PRP	M1511/3023/3828330041/139697744516810591/2761697628956368449233082210462148759 : 4076E3BDA8B4D4A3
2017-10-02	kkmrkkblmbrbk	C-PRP	M1511/3023/3828330041/139697744516810591/2761697628956368449233082210462148759 : 4076E3BDA8B4D4A3
2017-09-21	Oliver Kruse	C-PRP	M1511/known_factors : 4076E3BDA8B4D4A3
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12