263 487 907 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 2⁷³

TF target 2⁸⁰

Factored

Factor	Digits	Bits	Date
197990803980853553	18	57.5	2014-11-14 15:18:04

History

Date	User	Type	Result
2023-10-18	James Heinrich	NF	no factor TF: 67-68
2023-10-18	James Heinrich	NF	no factor TF: 68-69
2023-01-04	LordJulius	NF	no factor TF: 72-73
2023-01-04	LordJulius	NF	no factor TF: 71-72
2023-01-04	LordJulius	NF	no factor TF: 70-71
2023-01-04	LordJulius	NF	no factor TF: 69-70
2014-11-14	TJAOI	F	Factor: 197990803980853553
2013-11-22	Mucol	NF	no factor TF: 65-66
2011-08-16	TSavides	NF	no factor TF: 64-65
2010-03-19	Richard	NF	no factor TF: 63-64
2010-03-19	Richard	NF	no factor TF: 62-63