1 811 347 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
2206220647	10	31.0	old
445713227845745005380809	24	78.6	2020-06-22 03:50:03

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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 (Factored)	2017-10-03	Oliver Kruse	36D6E38B83AE2886	1	0	1	3
Verified (Factored)	2017-11-05	kkmrkkblmbrbk	36D6E38B83AE2886	1	581272	1	3
Verified	2020-06-22	M Miller	BBFC6E0B312F70B3	2	1107539	5	3
Verified	2020-06-23	marssystems	BBFC6E0B312F70B3	2	349613	5	3

History

Date	User	Type	Result
2020-06-23	marssystems	C-PRP	M1811347/2206220647/445713227845745005380809 : BBFC6E0B312F70B3 PRP: Verified PRP without proof (not generated)
2020-06-22	M Miller	C-PRP	M1811347/2206220647/445713227845745005380809 : BBFC6E0B312F70B3 PRP: Verified PRP without proof (not generated)
2020-06-22	nordi	F-ECM	Factor: 445713227845745005380809 / (ECM curve 2, B1=50000, B2=5000000, Sigma=5003204186657698)
2017-11-05	kkmrkkblmbrbk	C-PRP	M1811347/2206220647 : 36D6E38B83AE2886 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1811347/2206220647 : 36D6E38B83AE2886 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12