1 483 423 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
19407792219223	14	44.1	old
37188940319958633137	20	65.0	2018-04-19 13:42:14

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)	2017-10-01	Oliver Kruse	197D2564F7F439E0	1	0	1	3
Verified (Factored)	2017-10-28	kkmrkkblmbrbk	197D2564F7F439E0	1	1006952	1	3
Verified	2018-04-19	Xyzzy	CDEF2975B64A1BAA	2	101680	5	3
Verified	2018-04-24	nokno	09547DFF970B0C7D	2	0	1	3
Verified	2018-04-24	ATH	CDEF2975B64A1BAA	2	1279324	5	3
Verified	2018-04-24	kkmrkkblmbrbk	09547DFF970B0C7D	2	1158829	1	3
Verified	2023-11-15	Anton Tsvetkov	CDEF2975B64A1BAA	2	279615	5	3

P-1 factors

Date	Factor	B1	B2
2023-11-15	37188940319958633137	5000000	1006114200

History

Date	User	Type	Result
2023-11-15	curtisc	CERT	PRP Certification Proof certified good
2023-11-15	Anton Tsvetkov	C-PRP	M1483423/19407792219223/37188940319958633137 : CDEF2975B64A1BAA PRP proof power = 6 PRP: Verified Proof certified good
2023-11-15	Anton Tsvetkov	F-PM1	Factor: 37188940319958633137 / (P-1, B1=5000000, B2=1006114200)
2018-04-24	kkmrkkblmbrbk	C-PRP	M1483423/19407792219223/37188940319958633137 : 09547DFF970B0C7D PRP: Verified PRP without proof (not generated)
2018-04-24	ATH	C-PRP	M1483423/19407792219223/37188940319958633137 : CDEF2975B64A1BAA PRP: Verified PRP without proof (not generated)
2018-04-24	nokno	C-PRP	M1483423/19407792219223/37188940319958633137 : 09547DFF970B0C7D PRP: Verified PRP without proof (not generated)
2018-04-19	Xyzzy	C-PRP	M1483423/19407792219223/37188940319958633137 : CDEF2975B64A1BAA PRP: Verified PRP without proof (not generated)
2018-04-19	TJAOI	F	Factor: 37188940319958633137 / TF: 65-66
2017-10-28	kkmrkkblmbrbk	C-PRP	M1483423/19407792219223 : 197D2564F7F439E0 PRP: Verified PRP without proof (not generated)
2017-10-01	Oliver Kruse	C-PRP	M1483423/19407792219223 : 197D2564F7F439E0 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12