1 466 821 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
642467599	9	29.3	old
138644129745438487	18	56.9	2015-02-13 19:43:24
42095860111859836943	20	65.2	2018-07-18 10:21:24

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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)	2017-10-01	Oliver Kruse	5E1DC46D3CE7459A	2	0	1	3
Verified (Factored)	2017-10-28	kkmrkkblmbrbk	5E1DC46D3CE7459A	2	325751	1	3
Verified	2018-07-20	_p95holder_	10733FAB4B620C0E	3	684189	5	3
Verified	2018-07-20	francijezek	10733FAB4B620C0E	3	330240	5	3
Verified	2018-07-20	Luigi Morelli	10733FAB4B620C0E	3	800301	5	3

P-1 factors

Date	Factor	B1	B2
2015-02-13	138644129745438487	500000	15000000

History

Date	User	Type	Result
2018-07-20	Luigi Morelli	C-PRP	M1466821/642467599/138644129745438487/42095860111859836943 : 10733FAB4B620C0E PRP: Verified PRP without proof (not generated)
2018-07-20	francijezek	C-PRP	M1466821/642467599/138644129745438487/42095860111859836943 : 10733FAB4B620C0E PRP: Verified PRP without proof (not generated)
2018-07-20	_p95holder_	C-PRP	M1466821/642467599/138644129745438487/42095860111859836943 : 10733FAB4B620C0E PRP: Verified PRP without proof (not generated)
2018-07-18	TJAOI	F	Factor: 42095860111859836943 / TF: 65-66
2017-10-28	kkmrkkblmbrbk	C-PRP	M1466821/642467599/138644129745438487 : 5E1DC46D3CE7459A PRP: Verified PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1466821/642467599/138644129745438487 : 5E1DC46D3CE7459A PRP: Verified PRP without proof (not generated)
2015-02-13	alpertron	F-PM1	Factor: 138644129745438487 / (P-1, B1=500000, B2=15000000, E=12)