421 883 333 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 2⁸²

Factored

Factor	Digits	Bits	Date
71938949666989440289151	23	75.9	2025-02-28 20:12:43

History

Date	User	Type	Result
2025-02-28	NStorm	F	Factor: 71938949666989440289151 / TF: 75-76
2023-11-26	SRBase	NF	no factor TF: 74-75
2022-05-27	SRBase	NF	no factor TF: 73-74
2021-02-09	SRBase	NF	no factor TF: 72-73
2020-08-09	SRBase	NF	no factor TF: 71-72
2020-05-27	SRBase	NF	no factor TF: 70-71
2018-12-04	sasaki	NF	no factor TF: 69-70
2017-11-14	sasaki	NF	no factor TF: 68-69
2015-04-06	sasaki	NF	no factor TF: 66-68
2014-07-08	Richard	NF	no factor TF: 65-66

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