1 947 193 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
132284503649	12	36.9	old
154400721743	12	37.2	2008-07-15 07:48:33
230964350503	12	37.7	2008-07-15 07:48:33
1439743893830594916511	22	70.3	2021-05-25 20:58:49
1835717556839570486330447	25	80.6	2024-02-05 10:42:47

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)	2017-10-05	Oliver Kruse	9B48F4A0D16B53F4	3	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	9B48F4A0D16B53F4	3	1863837	1	3
Verified (Factored)	2021-05-26	tottenhoff	5B11856318BFAC4C	4	459411	5	3
Verified	2024-02-05	Naegi Makoto	5B11856318BFAC4C	5	1497794	5	3

History

Date	User	Type	Result
2024-02-05	Naegi Makoto	CERT	PRP Certification Proof certified good
2024-02-05	Naegi Makoto	C-PRP	M1947193/132284503649/154400721743/230964350503/1439743893830594916511/1835717556839570486330447 : 5B11856318BFAC4C PRP proof power = 7 PRP: Verified Proof certified good
2024-02-05	TJAOI	F-ECM	Factor: 1835717556839570486330447 / (ECM curve 23, B1=250000, B2=40000000, Sigma=7156311050863014)
2021-05-26	curtisc	CERT	PRP Certification Proof certified good
2021-05-26	tottenhoff	C-PRP	M1947193/132284503649/154400721743/230964350503/1439743893830594916511 : 5B11856318BFAC4C PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2021-05-25	_p95holder_	F-ECM	Factor: 1439743893830594916511 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1947193/132284503649/154400721743/230964350503 : 9B48F4A0D16B53F4 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1947193/132284503649/154400721743/230964350503 : 9B48F4A0D16B53F4 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-15	J Feitsma	F	Factor: 230964350503
2008-07-15	J Feitsma	F	Factor: 154400721743