4 352 977 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
36495574553301961	17	55.0	old
36430594617475775720119	23	74.9	2023-04-20 05:07:22
197734472545050212809978201	27	87.4	2023-04-20 10:39:39

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)	2017-09-20	kkmrkkblmbrbk	43656E6595B60EBE	1	0	1	3
Verified (Factored)	2018-02-06	Oliver Kruse	43656E6595B60EBE	1	2729765	1	3
Verified	2023-04-23	retsu	341D81D028CCC843	3	192573	5	3

P-1 factors

Date	Factor	B1	B2
2023-04-20	36430594617475775720119	448000	448000
2023-04-20	197734472545050212809978201	448000	251346810

History

Date	User	Type	Result
2023-04-23	retsu	C-PRP	M4352977/36495574553301961/36430594617475775720119/197734472545050212809978201 : 341D81D028CCC843 PRP: Verified PRP without proof (not generated)
2023-04-20	USAFSS	F-PM1	Factor: 197734472545050212809978201 / (P-1, B1=448000, B2=251346810)
2023-04-20	USAFSS	F-PM1	Factor: 36430594617475775720119 / (P-1, B1=448000)
2018-02-06	Oliver Kruse	C-PRP	M4352977/36495574553301961 : 43656E6595B60EBE PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4352977/36495574553301961 : 43656E6595B60EBE PRP: Verified PRP without proof (not generated)