5 148 851 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
4783326973474580711	19	62.1	2016-06-23 11:30:39
26852909064278225447	20	64.5	2017-11-02 12:27:00
50554360858709892559	20	65.5	old

Status	Date	User	Residue	Shift
Verified (Factored)	1998-06-14	Edward Boggs	24EBD8A965D7BFFC	0
Verified (Factored)	2000-08-17	Gordon M. Spence	24EBD8A965D7BFFC	540384

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	F66D47791CC8C280	2	0	1	3
Verified	2017-11-10	Yaroslav Berezhko	7520D1679F719F4F	3	826880	5	3
Verified	2017-12-10	Yaroslav Berezhko	7520D1679F719F4F	3	4150284	5	3
Verified	2018-06-28	kkmrkkblmbrbk	7520D1679F719F4F	3	4580587	5	3

History

Date	User	Type	Result
2025-01-10	Sid & Andy	NF-PM1	B1=3800000, B2=9313127670
2023-05-11	This -Anonymous-	NF-PM1	B1=50000, B2=1000000
2023-03-18	USAFSS	NF-PM1	B1=256000, B2=118689480
2022-06-21	LordJulius	NF	no factor from 2^63 to 2^64
2022-06-21	LordJulius	NF	no factor from 2^61 to 2^62
2018-06-28	kkmrkkblmbrbk	C-PRP	M5148851/26852909064278225447/4783326973474580711/50554360858709892559 : 7520D1679F719F4F PRP: Verified PRP without proof (not generated)
2017-12-10	Yaroslav Berezhko	C-PRP	M5148851/4783326973474580711/26852909064278225447/50554360858709892559 : 7520D1679F719F4F PRP: Verified PRP without proof (not generated)
2017-11-10	Yaroslav Berezhko	C-PRP	M5148851/4783326973474580711/26852909064278225447/50554360858709892559 : 7520D1679F719F4F PRP: Verified PRP without proof (not generated)
2017-11-02	TJAOI	F	Factor: 26852909064278225447 / TF: 64-65
2017-09-20	kkmrkkblmbrbk	C-PRP	M5148851/4783326973474580711/50554360858709892559 : F66D47791CC8C280 PRP: Verified PRP without proof (not generated)
2016-06-23	TJAOI	F	Factor: 4783326973474580711 / TF: 62-63