1 879 781 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
15038249	8	23.8	old
9859346041877930980831	22	73.1	2021-07-12 11:22:29
77596718133066869178370505777162159	35	115.9	2023-10-23 12:11:52

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)	2017-10-04	Oliver Kruse	EB1B6A889931CDC1	1	0	1	3
Verified (Factored)	2017-11-08	ATH	EB1B6A889931CDC1	1	575465	1	3
Verified (Factored)	2021-07-15	/r/counting	682A15A809D7F53A	2	708196	5	3
Verified	2023-10-23	Naegi Makoto	682A15A809D7F53A	3	147408	5	3

History

Date	User	Type	Result
2023-10-23	curtisc	CERT	PRP Certification Proof certified good
2023-10-23	Naegi Makoto	C-PRP	M1879781/15038249/9859346041877930980831/77596718133066869178370505777162159 : 682A15A809D7F53A PRP proof power = 7 PRP: Verified Proof certified good
2023-10-23	TJAOI	F-ECM	Factor: 77596718133066869178370505777162159 / (ECM curve 1, B1=250000, B2=40000000, Sigma=7087516513029904)
2021-07-15	Ben Delo	CERT	PRP Certification Proof certified good
2021-07-15	/r/counting	C-PRP	M1879781/15038249/9859346041877930980831 : 682A15A809D7F53A PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2021-07-12	_p95holder_	F-ECM	Factor: 9859346041877930980831 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-08	ATH	C-PRP	M1879781/15038249 : EB1B6A889931CDC1 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1879781/15038249 : EB1B6A889931CDC1 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12