1 947 641 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
214511898192223	15	47.6	old
79102037377893781122017	23	76.1	2021-12-06 11:02:33
1140184983693690389300473	25	79.9	2022-04-14 10:51:43

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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)	2017-10-05	Oliver Kruse	482C8B0E32E7214D	1	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	482C8B0E32E7214D	1	1686246	1	3
Verified (Factored)	2021-12-08	SRJ2877	2B1CB0964BCA1AE0	2	1788861	5	3
Verified	2022-04-20	Poao	2B1CB0964BCA1AE0	3	124749	5	3

History

Date	User	Type	Result
2022-04-20	curtisc	CERT	PRP Certification Proof certified good
2022-04-20	Poao	C-PRP	M1947641/214511898192223/79102037377893781122017/1140184983693690389300473 : 2B1CB0964BCA1AE0 PRP proof power = 7 PRP: Verified Proof certified good
2022-04-14	TJAOI	F-ECM	Factor: 1140184983693690389300473 / (ECM curve 26, B1=50000, B2=7500000)
2021-12-08	curtisc	CERT	PRP Certification Proof certified good
2021-12-08	SRJ2877	C-PRP	M1947641/214511898192223/79102037377893781122017 : 2B1CB0964BCA1AE0 PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2021-12-06	MarkS	F-ECM	Factor: 79102037377893781122017 / (ECM curve 3, B1=50000, B2=5000000, Sigma=2011293806717811)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1947641/214511898192223 : 482C8B0E32E7214D PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1947641/214511898192223 : 482C8B0E32E7214D PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12