5 781 569 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
6155988130779306649	19	62.4	2009-03-27 20:49:59
78327199195519448143	20	66.1	2019-10-03 12:22:22

Status	Date	User	Residue	Shift
Verified (Factored)	1998-10-25	Wilfred Whiteside	134DA3ED5356FC41	0
Verified (Factored)	2001-06-09	Ing. Pavel PaJaSoft Janousek	134DA3ED5356FC41	4218600

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	DB319E420CF3F6F2	1	0	1	3
Verified (Factored)	2018-08-07	ATH	DB319E420CF3F6F2	1	3306319	1	3
Verified	2019-10-05	mnd9	A8830276DFEBE7BE	2	3099523	5	3
Verified	2019-10-06	GAN	A8830276DFEBE7BE	2	5119759	5	3

History

Date	User	Type	Result
2025-08-19	Sid & Andy	NF-PM1	B1=3400000, B2=6781006050
2023-05-12	This -Anonymous-	NF-PM1	B1=100000, B2=2000000, E=6
2022-06-22	LordJulius	NF	no factor from 2^65 to 2^66
2022-04-24	J.R. Allen	NF	no factor from 2^64 to 2^65
2022-04-24	J.R. Allen	NF	no factor from 2^63 to 2^64
2022-04-24	J.R. Allen	F	Factor: 6155988130779306649 / TF: 62-63
2019-10-06	GAN	C-PRP	M5781569/6155988130779306649/78327199195519448143 : A8830276DFEBE7BE PRP: Verified PRP without proof (not generated)
2019-10-05	mnd9	C-PRP	M5781569/6155988130779306649/78327199195519448143 : A8830276DFEBE7BE PRP: Verified PRP without proof (not generated)
2019-10-03	TJAOI	F	Factor: 78327199195519448143 / TF: 66-67
2018-08-07	ATH	C-PRP	M5781569/6155988130779306649 : DB319E420CF3F6F2 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M5781569/6155988130779306649 : DB319E420CF3F6F2 PRP: Verified PRP without proof (not generated)
2009-03-27	GrunwalderGIMP	F-ECM	Factor: 6155988130779306649