4 201 751 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
165006467714383	15	47.2	old
39254820296226663391	20	65.1	2018-05-29 13:34:16

ECM

Digits	B1	Curves
25	50000	3 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-16	Oliver Kruse	572F36728C6CFC03	1	2152537	5	3
Verified (Factored)	2017-12-27	kkmrkkblmbrbk	572F36728C6CFC03	1	1191318	5	3
Verified	2018-06-01	_p95holder_	572F36728C6CFC03	2	516253	5	3

History

Date	User	Type	Result
2022-09-16	USAFSS	NF-PM1	B1=340000, B2=197052570
2018-06-01	_p95holder_	C-PRP	M4201751/165006467714383/39254820296226663391 : 572F36728C6CFC03 PRP: Verified PRP without proof (not generated)
2018-05-29	TJAOI	F	Factor: 39254820296226663391 / TF: 65-66
2017-12-27	kkmrkkblmbrbk	C-PRP	M4201751/165006467714383 : 572F36728C6CFC03 PRP: Verified PRP without proof (not generated)
2017-11-16	Oliver Kruse	C-PRP	M4201751/165006467714383 : 572F36728C6CFC03 PRP: Verified PRP without proof (not generated)