440 047 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
1730711977554124249	19	60.6	2007-09-04 15:18:57
1041506016639286615975777	25	79.8	2014-11-21 15:50:34

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-24	Oliver Kruse	74D0DF487B9EAA25	2	0	1	3
Verified	2017-10-13	kkmrkkblmbrbk	74D0DF487B9EAA25	2	299270	1	3
Unverified (Reliable)	2020-04-18	Oliver Kruse	718CEDC5AAC0F1__	2	434005	5	3

P-1 factors

Date	Factor	B1	B2
2014-11-21	1041506016639286615975777	3000000	100000000

History

Date	User	Type	Result
2020-04-18	Oliver Kruse	C-PRP	M440047/1730711977554124249/1041506016639286615975777 : 718CEDC5AAC0F1__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-13	kkmrkkblmbrbk	C-PRP	M440047/1730711977554124249/1041506016639286615975777 : 74D0DF487B9EAA25 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-24	Oliver Kruse	C-PRP	M440047/1730711977554124249/1041506016639286615975777 : 74D0DF487B9EAA25 PRP without proof (not generated)
2014-11-21	alpertron	F-PM1	Factor: 1041506016639286615975777 / (P-1, B1=3000000, B2=100000000, E=12)
2007-09-04	Chad Davis	F-ECM	Factor: 1730711977554124249