137 583 881 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 2⁷⁷

TF target 2⁷⁷

P-1

B1 =	1153000
B2 =	1170060870

Status	Date	User	Residue	Shift	Type	Base
Verified	2025-04-03	saffah	4574BB47844BA1F5	87808530	1	3

History

Date	User	Type	Result
2025-04-03	Resolver	CERT	PRP Certification CERT proof power = 8 Proof certified good
2025-04-03	saffah	C-PRP	4574BB47844BA1F5 PRP proof power = 8 PRP: Verified Proof certified good
2024-09-17	Luke Durant	NF-PM1	B1=1153000, B2=1170060870
2024-08-17	bayanne	NF	no factor from 2^76 to 2^77
2024-08-15	OliverBleen	NF	no factor from 2^75 to 2^76
2023-01-12	SRBase	NF	no factor from 2^74 to 2^75
2021-07-31	SRBase	NF	no factor from 2^73 to 2^74
2020-10-27	SRBase	NF	no factor from 2^72 to 2^73
2016-10-08	Xolotl	NF	no factor from 2^71 to 2^72
2016-10-07	Xolotl	NF	no factor from 2^70 to 2^71
2016-04-08	Smok_bmv	NF	no factor from 2^69 to 2^70
2016-03-31	dbaugh	NF	no factor from 2^68 to 2^69
2016-02-27	dbaugh	NF	no factor from 2^67 to 2^68
2015-02-04	fireredd	NF	no factor from 2^66 to 2^67
2012-11-13	kracker	NF	no factor from 2^65 to 2^66
2010-12-01	Thomas Stork	NF	no factor from 2^64 to 2^65
2010-06-11	Charles A. Morris	NF	no factor from 2^63 to 2^64