8 017 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 5 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
128273	6	17.0	old
585930463	9	29.1	old
6163457930572547825574125412144120319	37	122.2	old
466627910317083433103066106476038970159	39	128.5	2020-12-06 14:39:48
669967302950239746245308571810352855698833	42	138.9	2024-12-06 00:16:30

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	9029 / 16550

Estimated T-Level: 47.7 ⓘ

TF below 2^154 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Factored	No proof (small exponent)	2017-09-21	Oliver Kruse	1C15E9FBF7AC969C	3	0	1	3
Factored	No proof (small exponent)	2017-10-02	kkmrkkblmbrbk	1C15E9FBF7AC969C	3	0	1	3
Factored	No proof (small exponent)	2017-12-07	ATH	1C15E9FBF7AC969C	3	2599	1	3
Factored	No proof (small exponent)	2020-04-17	Oliver Kruse	2417F8B7482BFBB4	3	6623	5	3
Factored	No proof (small exponent)	2020-12-06	Bruno Victal	2417F8B7482BFBB4	4	2663	5	3
Verified	No proof (small exponent)	2024-12-06	nordi	2417F8B7482BFBB4	5	7007	5	3
Verified	No proof (small exponent)	2025-03-20	Erik Wouters	2417F8B7482BFBB4	5	1662	5	3
Verified	No proof (small exponent)	2025-03-20	Erik Wouters	2417F8B7482BFBB4	5	6378	5	3

History

Date	User	Type	Result
2025-05-28	masser	NF-PP1	Start=188/13, B1=1300000000, B2=1298700000000
2025-03-20	Erik Wouters	C-PRP	M8017/128273/585930463/6163457930572547825574125412144120319/466627910317083433103066106476038970159/669967302950239746245308571810352855698833 : 2417F8B7482BFBB4
2025-03-20	Erik Wouters	C-PRP	M8017/128273/585930463/6163457930572547825574125412144120319/466627910317083433103066106476038970159/669967302950239746245308571810352855698833 : 2417F8B7482BFBB4
2024-12-06	nordi	C-PRP	M8017/128273/585930463/6163457930572547825574125412144120319/466627910317083433103066106476038970159/669967302950239746245308571810352855698833 : 2417F8B7482BFBB4
2024-12-06	nordi	F-ECM	Factor: 669967302950239746245308571810352855698833 / ECM curve 229, B1=110000000, B2=1862337927450, Edwards Sigma=5194848489825797
2023-05-29	JacobZ	NF-PM1	B1=74000000000, B2=302392782203912400
2022-09-03	BloodIce	NF-PM1	B1=200000000000, B2=13140669832290
2022-08-29	BloodIce	NF-PM1	B1=20000000000
2022-08-29	BloodIce	NF-PM1	B1=2000000000
2022-08-29	BloodIce	NF-PM1	B1=200000000
2021-12-16	ANONYMOUS	NF-PM1	B1=100000000
2020-12-06	Bruno Victal	C-PRP	M8017/128273/585930463/6163457930572547825574125412144120319/466627910317083433103066106476038970159 : 2417F8B7482BFBB4
2020-12-06	Bruno Victal	F-ECM	Factor: 466627910317083433103066106476038970159 / ECM curve 108, B1=11000000, Montgomery Sigma=7233316090424300
2020-04-17	Oliver Kruse	C-PRP	M8017/128273/585930463/6163457930572547825574125412144120319 : 2417F8B7482BFBB4
2017-12-07	ATH	C-PRP	M8017/128273/585930463/6163457930572547825574125412144120319 : 1C15E9FBF7AC969C
2017-10-02	kkmrkkblmbrbk	C-PRP	M8017/128273/585930463/6163457930572547825574125412144120319 : 1C15E9FBF7AC969C
2017-09-21	Oliver Kruse	C-PRP	M8017/known_factors : 1C15E9FBF7AC969C