5 203 157 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁷⁰

TF target 2⁶⁶

Factored

Factor	Digits	Bits	Date
189478165313	12	37.5	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-11-22	storm5510	2830DB92B3207BA6	1	4976095	5	3
Verified	PRP without proof (not generated)	2018-01-20	kkmrkkblmbrbk	2830DB92B3207BA6	1	2666624	5	3

History

Date	User	Type	Result
2025-03-06	Sid & Andy	NF	no factor TF: 68-70
2022-11-13	Kevin_9611	NF-PM1	B1=400000, B2=55552770
2018-01-20	kkmrkkblmbrbk	C-PRP	M5203157/189478165313 : 2830DB92B3207BA6
2017-11-22	storm5510	C-PRP	M5203157/189478165313 : 2830DB92B3207BA6

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