299 771 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
1003600575574983026723281	25	79.7	2015-12-03 22:25:31

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	442 / 640

Estimated T-Level: 28.5 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	58CB	0
Verified (Factored)		Unknown	58CB	0
Verified (Factored)		Guillermo Ballester Valor	79989447A2D6D8CB	0
Verified (Factored)		Eivind Triel	79989447A2D6D8CB	4370
Verified (Factored)	2001-11-24	Eugene Gogol'	79989447A2D6D8CB	167741

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-24	Oliver Kruse	E7A89C6942500397	1	0	1	3
Verified	2017-09-30	alpertron	E7A89C6942500397	1	0	1	3
Verified	2017-12-07	ATH	E7A89C6942500397	1	279244	1	3
Unverified (Reliable)	2020-04-17	Oliver Kruse	9E7E8C5B28BE7F__	1	29682	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-04-30	nordi	NF-PP1	Start=6/5, B1=10000000, B2=500000000
2021-04-23	nordi	NF-PP1	Start=2/7, B1=10000000, B2=500000000
2020-04-17	Oliver Kruse	C-PRP	M299771/1003600575574983026723281 : 9E7E8C5B28BE7F__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M299771/1003600575574983026723281 : E7A89C6942500397 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-30	alpertron	C-PRP	M299771/1003600575574983026723281 : E7A89C6942500397 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-24	Oliver Kruse	C-PRP	M299771/1003600575574983026723281 : E7A89C6942500397 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M299771/1003600575574983026723281 : E7A89C6942500397 PRP without proof (not generated)
2015-12-03	bam	F-ECM	Factor: 1003600575574983026723281 / (ECM curve 3, B1=250000, B2=25000000)
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2013-06-11	lycorn	NF	no factor from 2^60 to 2^61
2009-01-24	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-02	Sturle Sunde	NF	no factor from 2^58 to 2^59
2008-11-15	Jayson King	NF-PM1	B1=10000000, B2=400000000, E=12