1 399 Exponent Status

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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is PRP (Probable-Prime).

Factored

Factor	Digits	Bits	Date
28875361	8	24.8	old
4320651071020341609502042221583629017824960697	46	151.6	old
9729831901051958663829453004687723271026191923786080297556081	61	202.6	2020-12-19 23:37:46

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-27	Oliver Kruse	DAC8C51337782CB4	2	0	1	3
Verified (Factored)	2017-10-09	Chang Chia-Tche	DAC8C51337782CB4	2	0	1	3
Verified (Factored)	2017-10-12	kkmrkkblmbrbk	DAC8C51337782CB4	2	473	1	3
Verified (Factored)	2020-04-17	Oliver Kruse	CB9A0C7A82105618	2	437	5	3
Verified (Factored)	2020-08-12	_p95holder_	CB9A0C7A82105618	2	1288	5	3
Verified	2020-12-20	mikr	PRP_PRP_PRP_PRP_	3	275	1	3
Verified	2020-12-20	Maciej Kmieciak	PRP_PRP_PRP_PRP_	3	1134	1	3

History

Date	User	Type	Result
2020-12-20	Maciej Kmieciak	P-PRP	M1399/28875361/4320651071020341609502042221583629017824960697/9729831901051958663829453004687723271026191923786080297556081 is a probable prime.
2020-12-20	mikr	P-PRP	M1399/28875361/4320651071020341609502042221583629017824960697/9729831901051958663829453004687723271026191923786080297556081 is a probable prime.
2020-12-19	Ryan Propper	F-ECM	Factor: 9729831901051958663829453004687723271026191923786080297556081 / (ECM curve 1, B1=850000000, B2=15892628251516, Sigma=16318523421442679557)
2020-08-12	_p95holder_	C-PRP	M1399/28875361/4320651071020341609502042221583629017824960697 : CB9A0C7A82105618 PRP: Verified PRP without proof (small exponent)
2020-04-17	Oliver Kruse	C-PRP	M1399/28875361/4320651071020341609502042221583629017824960697 : CB9A0C7A82105618 PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M1399/28875361/4320651071020341609502042221583629017824960697 : DAC8C51337782CB4 PRP: Verified PRP without proof (not generated)
2017-10-09	Chang Chia-Tche	C-PRP	M1399/known_factors : DAC8C51337782CB4 PRP: Verified PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M1399/28875361/4320651071020341609502042221583629017824960697 : DAC8C51337782CB4 PRP: Verified PRP without proof (not generated)
2017-09-25	csaba	C-PRP	M1399/known_factors : DAC8C51337782CB4 PRP without proof (not generated)
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12