1 962 523 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
46535345377	11	35.4	old
9018703151544197440664379689	28	92.9	2020-12-16 17:53:19

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	131 / 640

Estimated T-Level: 26.0 ⓘ

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)	2017-10-05	Oliver Kruse	3C4DCC8F5944A3E6	1	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	3C4DCC8F5944A3E6	1	461267	1	3
Verified	2020-12-19	LLangley	AB1C639B1A56CFE0	2	676153	5	3

History

Date	User	Type	Result
2023-10-14	USAFSS	NF-PM1	B1=576000, B2=490908600
2022-08-12	USAFSS	NF-PM1	B1=132000, B2=134381520
2020-12-19	Franklin Webber	CERT	PRP Certification Proof certified good
2020-12-19	LLangley	C-PRP	M1962523/46535345377/9018703151544197440664379689 : AB1C639B1A56CFE0 PRP proof power = 7 PRP: Verified Proof certified good
2020-12-16	_p95holder_	F-ECM	Factor: 9018703151544197440664379689 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1962523/46535345377 : 3C4DCC8F5944A3E6 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1962523/46535345377 : 3C4DCC8F5944A3E6 PRP: Verified (Factored) PRP without proof (not generated)