1 120 883 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
56044151	8	25.7	old
783579866428889	15	49.5	2014-04-30 11:29:57
284426619379530934997448781235736751	36	117.8	2014-12-27 12:07:29

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	2017-10-05	Oliver Kruse	4EACA29A1D177938	3	0	1	3
Verified	2017-10-16	Oliver Kruse	4EACA29A1D177938	3	85839	1	3
Verified	2018-01-02	ATH	4EACA29A1D177938	3	342936	1	3

P-1 factors

Date	Factor	B1	B2
2014-12-27	284426619379530934997448781235736751	300000	10000000

History

Date	User	Type	Result
2018-01-02	ATH	C-PRP	M1120883/56044151/783579866428889/284426619379530934997448781235736751 : 4EACA29A1D177938 PRP: Verified PRP without proof (not generated)
2017-10-16	Oliver Kruse	C-PRP	M1120883/56044151/783579866428889/284426619379530934997448781235736751 : 4EACA29A1D177938 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1120883/56044151/783579866428889/284426619379530934997448781235736751 : 4EACA29A1D177938 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1120883/56044151/783579866428889/284426619379530934997448781235736751 : 4EACA29A1D177938 PRP without proof (not generated)
2014-12-27	alpertron	F-PM1	Factor: 284426619379530934997448781235736751 / (P-1, B1=300000, B2=10000000, E=12)
2014-04-30	TJAOI	F	Factor: 783579866428889