1 985 509 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
47652217	8	25.5	old
53573049837645643127503	23	75.5	2022-03-28 11:58:37

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	58 / 640

Estimated T-Level: 25.5 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	713420C70E45A2B2	1	0	1	3
Verified (Factored)	2017-11-12	kkmrkkblmbrbk	713420C70E45A2B2	1	1324995	1	3
Verified	2022-03-30	JackBlock	6EA0143801C85B82	2	1933282	5	3
Verified	2022-03-30	_p95holder_	6EA0143801C85B82	2	1406489	5	3

History

Date	User	Type	Result
2022-08-14	USAFSS	NF-PM1	B1=132000, B2=134381520
2022-03-30	_p95holder_	C-PRP	M1985509/47652217/53573049837645643127503 : 6EA0143801C85B82 PRP: Verified PRP without proof (not generated)
2022-03-30	argilo	CERT	PRP Certification Proof certified good
2022-03-30	JackBlock	C-PRP	M1985509/47652217/53573049837645643127503 : 6EA0143801C85B82 PRP proof power = 7 PRP: Verified Proof certified good
2022-03-28	_p95holder_	F-ECM	Factor: 53573049837645643127503 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-12	kkmrkkblmbrbk	C-PRP	M1985509/47652217 : 713420C70E45A2B2 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1985509/47652217 : 713420C70E45A2B2 PRP: Verified PRP without proof (not generated)