102 256 757 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 2⁷⁶

TF target 2⁷⁶

P-1

B1 =	1000000
B2 =	30000000

Status	Date	User	Residue	Shift	Type	Base
Verified	2021-01-20	Ben Delo	86783AC6EAD6C796	54961656	1	3

History

Date	User	Type	Result
2021-01-20	George Woltman	CERT	PRP Certification CERT proof power = 8 Proof certified good
2021-01-20	Ben Delo	C-PRP	86783AC6EAD6C796 PRP proof power = 8 PRP: Verified Proof certified good
2021-01-18	Kriesel	NF-PM1	B1=1000000, B2=30000000
2020-10-25	1997rj7	NF	no factor from 2^75 to 2^76
2020-10-25	1997rj7	NF	no factor from 2^74 to 2^75
2020-03-30	SRBase	NF	no factor from 2^73 to 2^74
2019-11-26	B3v4gy0k	NF	no factor from 2^72 to 2^73
2014-12-14	RichD0	NF	no factor from 2^71 to 2^72
2013-10-29	roemer2201	NF	no factor from 2^70 to 2^71
2013-09-16	roemer2201	NF	no factor from 2^69 to 2^70
2013-09-09	Zalithos	NF	no factor from 2^68 to 2^69
2013-09-08	Cow_tipping	NF	no factor from 2^67 to 2^68
2013-09-07	processinfo	NF	no factor from 2^66 to 2^67
2012-04-21	Le Comte	NF	no factor from 2^65 to 2^66
2010-08-17	Mr-Plonk	NF	no factor from 2^64 to 2^65
2010-04-12	1997rj7	NF	no factor from 2^63 to 2^64