1 057 223 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
298136887	9	28.2	old
66760254490254017604913	23	75.8	2014-12-19 18:36:37

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-28	Oliver Kruse	06DBBA63FF7A6695	2	0	1	3
Verified	2017-10-16	Oliver Kruse	06DBBA63FF7A6695	2	12161	1	3
Verified	2017-12-28	ATH	06DBBA63FF7A6695	2	638838	1	3

P-1 factors

Date	Factor	B1	B2
2014-12-19	66760254490254017604913	300000	10000000

History

Date	User	Type	Result
2017-12-28	ATH	C-PRP	M1057223/298136887/66760254490254017604913 : 06DBBA63FF7A6695 PRP: Verified PRP without proof (not generated)
2017-10-16	Oliver Kruse	C-PRP	M1057223/298136887/66760254490254017604913 : 06DBBA63FF7A6695 PRP: Verified PRP without proof (not generated)
2017-09-28	Oliver Kruse	C-PRP	M1057223/298136887/66760254490254017604913 : 06DBBA63FF7A6695 PRP: Verified PRP without proof (not generated)
2014-12-19	alpertron	F-PM1	Factor: 66760254490254017604913 / (P-1, B1=300000, B2=10000000, E=12)