277 603 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
72800484003807272778276006885084480703	38	125.8	2022-06-19 20:36:22

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	160 / 1566

Estimated T-Level: 30.5 ⓘ

TF below 2^96 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	3949	0
Verified (Factored)		Unknown	3949	0
Verified (Factored)		Brian J. Beesley	4F6B1EF1A85A3949	0
Verified (Factored)		Eivind Triel	4F6B1EF1A85A3949	152783
Verified (Factored)	2001-11-24	Brian J. Beesley	4F6B1EF1A85A3949	127174

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-06-20	some-students	3EBEB96634119F5F	1	105012	5	3

P-1 factors

Date	Factor	B1	B2
2022-06-19	72800484003807272778276006885084480703	139000000	3217928103390

History

Date	User	Type	Result
2022-06-20	carlds	CERT	PRP Certification Proof certified good
2022-06-20	some-students	C-PRP	M277603/72800484003807272778276006885084480703 : 3EBEB96634119F5F PRP proof power = 5 PRP: Verified Proof certified good
2022-06-19	Sid & Andy	F-PM1	Factor: 72800484003807272778276006885084480703 / (P-1, B1=139000000, B2=3217928103390)
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2020-01-05	Gordon Spence	NF	no factor from 2^65 to 2^66
2020-01-05	Yxinity	NF	no factor from 2^65 to 2^66
2018-03-24	Gordon Spence	NF	no factor from 2^64 to 2^65
2016-02-04	Gordon Spence	NF	no factor from 2^63 to 2^64
2016-02-04	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2013-06-30	lycorn	NF	no factor from 2^60 to 2^61
2013-01-01	alpertron	NF-PM1	B1=100000000, B2=2000000000, E=12
2012-02-26	Joss	NF-PM1	B1=2187742
2011-07-24	Joss	NF-PM1	B1=1750194
2011-06-26	Joss	NF-PM1	B1=1050116
2009-01-23	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-01	Sturle Sunde	NF	no factor from 2^58 to 2^59