1 853 479 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
226479268019761	15	47.7	old
156003539033246584721	21	67.1	2020-09-08 12:45:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	402117F360FCD2A5	1	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	402117F360FCD2A5	1	1759021	1	3
Verified	2020-09-10	Klaus Nordmann	C37FE691CDBBE25C	2	431271	5	3
Verified	2020-11-11	Oliver Kruse	C37FE691CDBBE25C	2	1394625	5	3

History

Date	User	Type	Result
2020-11-11	Dry Creek Photo	CERT	PRP Certification Proof certified good
2020-11-11	Oliver Kruse	C-PRP	M1853479/226479268019761/156003539033246584721 : C37FE691CDBBE25C PRP proof power = 7 PRP: Verified Proof certified good
2020-09-10	Klaus Nordmann	C-PRP	M1853479/226479268019761/156003539033246584721 : C37FE691CDBBE25C PRP proof power = 7 PRP: Verified PRP proof never uploaded
2020-09-08	_p95holder_	F-ECM	Factor: 156003539033246584721 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-07	kkmrkkblmbrbk	C-PRP	M1853479/226479268019761 : 402117F360FCD2A5 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1853479/226479268019761 : 402117F360FCD2A5 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12