6 229 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 2 known prime factors. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁴⁴

Factored

Factor	Digits	Bits	Date
165989240868343	15	47.2	old
1859660166889417	16	50.7	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	3506 / 16550

Estimated T-Level: 46.1 ⓘ

TF below 2^148 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	9499F13925349158	2	0	1	3
Verified	No proof (small exponent)	2017-10-12	kkmrkkblmbrbk	9499F13925349158	2	3999	1	3
Verified	No proof (small exponent)	2020-04-17	Oliver Kruse	08EE4F3B175C2DAF	2	622	5	3
Verified	No proof (small exponent)	2024-02-03	Wentao Huang	08EE4F3B175C2DAF	2	5661	5	3

History

Date	User	Type	Result
2025-03-18	masser	NF-PP1	Start=82/29, B1=1000000000, B2=999000000000
2025-03-09	masser	NF-PP1	Start=6/5, B1=1000000000, B2=999000000000
2025-03-01	masser	NF-PP1	Start=2/7, B1=1000000000, B2=999000000000
2024-02-03	Wentao Huang	C-PRP	M6229/165989240868343/1859660166889417 : 08EE4F3B175C2DAF
2023-08-01	-anonymous-	NF-PM1	B1=39000000000, B2=163113042636343800
2021-08-01	ViliamF	NF-PM1	B1=500000000, B2=90500000000
2020-04-17	Oliver Kruse	C-PRP	M6229/165989240868343/1859660166889417 : 08EE4F3B175C2DAF
2017-10-12	kkmrkkblmbrbk	C-PRP	M6229/165989240868343/1859660166889417 : 9499F13925349158
2017-09-21	Oliver Kruse	C-PRP	M6229/165989240868343/1859660166889417 : 9499F13925349158
2017-09-21	Oliver Kruse	C-PRP	M6229/165989240868343/1859660166889417 : 9499F13925349158
1999-04-23	-anonymous-	F-PM1	Factor: 165989240868343