153 266 623 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 2⁷⁷

TF target 2⁷⁷

Factored

Factor	Digits	Bits	Date
28090578317825175645499529	26	84.5	2025-02-27 20:24:32

P-1 factors

Date	Factors	B1	B2
2025-02-27	28090578317825175645499529	1107000	1107000

History

Date	User	Type	Result
2025-02-27	Dmitry Bolshakov	F-PM1	Factor: 28090578317825175645499529 / B1=1107000
2025-01-02	sgt_duck	NF	no factor TF: 76-77
2024-08-06	SRBase	NF	no factor TF: 75-76
2023-02-14	SRBase	NF	no factor TF: 74-75
2021-11-14	SRBase	NF	no factor TF: 73-74
2017-05-01	Sergey Nosov	NF	no factor TF: 72-73
2017-03-08	Ryan Propper	NF	no factor TF: 71-72
2017-03-08	Ryan Propper	NF	no factor TF: 70-71
2017-03-08	Ryan Propper	NF	no factor TF: 69-70
2017-03-08	Ryan Propper	NF	no factor TF: 68-69
2017-02-26	Xolotl	NF	no factor TF: 68-69
2016-04-25	Mr-Plonk	NF	no factor TF: 67-68
2015-04-28	ANONYMOUS	NF	no factor TF: 66-67
2013-01-26	Charles A. Morris	NF	no factor TF: 65-66
2011-01-18	Mr-Plonk	NF	no factor TF: 64-65
2010-06-24	Charles A. Morris	NF	no factor TF: 63-64