1 380 619 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
4089393479	10	31.9	old
9953241102591571721	19	63.1	2015-01-11 14:36:48
54473285552787680079870529	26	85.5	2018-11-09 13:47:20
71962218452990737443874903	26	85.9	2018-11-09 13:47:20

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	9B71A7C327C0D510	2	0	1	3
Verified (Factored)	2017-10-24	kkmrkkblmbrbk	9B71A7C327C0D510	2	895102	1	3
Verified	2018-11-09	rucio	B860D7BE19B52121	4	365967	5	3
Verified	2018-11-09	ATH	B860D7BE19B52121	4	1146823	5	3

P-1 factors

Date	Factor	B1	B2
2015-01-11	9953241102591571721	500000	15000000

History

Date	User	Type	Result
2018-11-09	ATH	C-PRP	M1380619/4089393479/9953241102591571721/54473285552787680079870529/71962218452990737443874903 : B860D7BE19B52121 PRP: Verified PRP without proof (not generated)
2018-11-09	rucio	C-PRP	M1380619/4089393479/9953241102591571721/54473285552787680079870529/71962218452990737443874903 : B860D7BE19B52121 PRP: Verified PRP without proof (not generated)
2018-11-09	TJAOI	F-ECM	Factor: 71962218452990737443874903 / (ECM curve 1, B1=50000, B2=5000000)
2018-11-09	TJAOI	F-ECM	Factor: 54473285552787680079870529 / (ECM curve 32, B1=50000, B2=5000000)
2017-10-24	kkmrkkblmbrbk	C-PRP	M1380619/4089393479/9953241102591571721 : 9B71A7C327C0D510 PRP: Verified PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1380619/4089393479/9953241102591571721 : 9B71A7C327C0D510 PRP: Verified PRP without proof (not generated)
2015-01-11	alpertron	F-PM1	Factor: 9953241102591571721 / (P-1, B1=500000, B2=15000000, E=12)