2 505 143 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 2⁶³

Factored

Factor	Digits	Bits	Date
5010287	7	22.3	old
60123433	8	25.8	2008-07-14 20:24:27
101627062983911	15	46.5	2008-09-07 10:06:23
332661250769047	15	48.2	2014-04-01 10:34:06

ECM

Digits	B1	Curves
25	50000	128 / 280

Estimated T-Level: 22.3 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-14	Oliver Kruse	7D44EA1758150234	4	529705	5	3
Verified	PRP without proof (not generated)	2017-11-30	storm5510	7D44EA1758150234	4	2338119	5	3

History

Date	User	Type	Result
2022-08-19	USAFSS	NF-PM1	B1=240000, B2=199861200
2017-11-30	storm5510	C-PRP	M2505143/5010287/60123433/101627062983911/332661250769047 : 7D44EA1758150234
2017-10-14	Oliver Kruse	C-PRP	M2505143/5010287/60123433/101627062983911/332661250769047 : 7D44EA1758150234
2014-04-01	TJAOI	F	Factor: 332661250769047
2008-09-07	Will Edgington	F	Factor: 101627062983911
2008-07-14	George Woltman	F-ECM	Factor: 60123433

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