200 000 719 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: proven not-prime with PRP test

TF

No factors below 2⁷⁹

TF target 2⁷⁹

P-1

B1 =	1670000
B2 =	41750000

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-02-01	Ratchet Zufreur	15CC4B8221EF02E7	174456669	1	3

History

Date	User	Type	Result
2021-02-02	Franklin Webber	CERT	PRP Certification CERT proof power = 10 Proof certified good
2021-02-01	Ratchet Zufreur	C-PRP	15CC4B8221EF02E7 PRP proof power = 10 PRP: Verified Proof certified good
2018-11-19	Kriesel	NF	no factor from 2^78 to 2^79
2018-11-19	Kriesel	NF	no factor from 2^77 to 2^78
2018-11-19	Kriesel	NF	no factor from 2^76 to 2^77
2018-11-19	Kriesel	NF	no factor from 2^75 to 2^76
2018-11-14	Kriesel	NF-PM1	B1=1670000, B2=41750000, e=4
2018-08-23	Dylan Delgado	NF	no factor from 2^74 to 2^75
2009-04-30	unconnected	NF	no factor from 2^73 to 2^74
2009-04-23	unconnected	NF	no factor from 2^72 to 2^73
2009-04-20	unconnected	NF	no factor from 2^71 to 2^72
2009-04-14	unconnected	NF	no factor from 2^70 to 2^71
2009-04-05	unconnected	NF	no factor from 2^69 to 2^70
2009-04-04	unconnected	NF	no factor from 2^68 to 2^69
2009-04-04	unconnected	NF	no factor from 2^67 to 2^68