997 192 121 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite: 1 known prime factor

Trial Factored to 2⁷⁶

TF target 2⁸⁵

Factored

Factor	Digits	Bits	Date
56056914122567091713503	23	75.6	2025-01-02 14:34:04

History

Date	User	Type	Result
2025-06-12	Greg	F	Factor: 56056914122567091713503 / TF: 75-76
2025-01-02	Dmitry Bolshakov	F	Factor: 56056914122567091713503 / TF: 75-76*
2023-05-06	lycorn	NF	no factor TF: 74-75
2022-01-07	onlinegame	NF	no factor TF: 73-74
2020-05-16	lycorn	NF	no factor TF: 71-73
2012-04-29	lindee	NF	no factor TF: 69-71
2011-05-25	lindee	NF	no factor TF: 66-69
2011-01-15	lindee	NF	no factor TF: 65-66
2010-08-13	linded	NF	no factor TF: 64-65

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