74 006 137 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 both PRP and Lucas-Lehmer tests

TF

No factors below 2⁷⁵

TF target 2⁷⁴

P-1

B1 =	630000
B2 =	11812500

Status	Date	User	Residue	Shift
Verified	2017-07-12	Dmitriy Degtiarev	9F9E2E6D3761F4F8	71735270
Verified	2024-12-02	jg5	9F9E2E6D3761F4F8	69443935

Status	Date	User	Residue	Shift	Type	Base
Verified	2024-11-17	Luke Durant	06548A9598C9D99B	0	1	3

History

Date	User	Type	Result
2024-12-02	jg5	C-LL	9F9E2E6D3761F4F8
2024-11-17	Carlos Pinho	CERT	PRP Certification CERT proof power = 9 Proof certified good
2024-11-17	Luke Durant	C-PRP	06548A9598C9D99B PRP proof power = 9 PRP: Verified Proof certified good
2017-07-12	Dmitriy Degtiarev	C-LL	9F9E2E6D3761F4F8
2015-03-05	arnaud	NF-PM1	B1=630000, B2=11812500
2015-02-26	Luigi Morelli	NF	no factor from 2^74 to 2^75
2015-02-26	Luigi Morelli	NF	no factor from 2^73 to 2^74
2015-02-25	el grocco	NF	no factor from 2^72 to 2^73
2015-02-25	el grocco	NF	no factor from 2^71 to 2^72
2013-05-22	JeffreyH-8	NF	no factor from 2^70 to 2^71
2012-12-14	-Anonymous-	NF	no factor from 2^69 to 2^70
2010-09-24	KA9DGX	NF	no factor from 2^68 to 2^69
2010-09-14	Prime Hunter	NF	no factor from 2^67 to 2^68
2010-09-10	Amlan Saha	NF	no factor from 2^66 to 2^67
2010-06-21	Charles A. Morris	NF	no factor from 2^65 to 2^66
2010-06-17	Gnorfe	NF	no factor from 2^64 to 2^65
2008-09-12	lycorn	NF	no factor to 2^64