5 033 383 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁷⁰

TF target 2⁶⁵

Factored

Factor	Digits	Bits	Date
15296559349788158017	20	63.7	2014-12-16 14:36:28

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift	Software
Factored	1998-09-27	Rob Harger	37A8BCCFE5C82BD2	0	Linux 32-bit,Prime95,v16,(aka WS2)
Factored	2001-06-23	Anton Rebhan	37A8BCCFE5C82BD2	2076627	Linux 32-bit,Prime95,v19,(aka WV2)

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-11-22	kkmrkkblmbrbk	069EB7FF1AD5C401	1	1694651	5	3
Verified	PRP without proof (not generated)	2018-04-25	storm5510	069EB7FF1AD5C401	1	4620325	5	3

History

Date	User	Type	Result
2025-02-01	Sid & Andy	NF-PM1	B1=5200000, B2=6757822890
2025-01-06	Sid & Andy	NF	no factor TF: 68-70
2023-04-14	Kevin_9611	NF-PM1	B1=330000, B2=178871550
2018-04-25	storm5510	C-PRP	M5033383/15296559349788158017 : 069EB7FF1AD5C401
2017-11-22	kkmrkkblmbrbk	C-PRP	M5033383/15296559349788158017 : 069EB7FF1AD5C401
2014-12-16	VictordeHollander	F	Factor: 15296559349788158017 / TF: 63-64
2014-11-17	Joss	NF-PM1	B1=67752
2009-07-21	USAFSS	NF-PM1	B1=55000, B2=907500, E=6
2006-01-15	Joss	NF-PM1	B1=2000
2001-06-23	-anonymous-	C-LL	37A8BCCFE5C82BD2
2000-05-05	-anonymous-	C-LL	88AEDF2965061F__
1998-09-27	-anonymous-	C-LL	37A8BCCFE5C82BD2
1998-01-26	-anonymous-	NF	no factor TF: 1-61