4 194 304 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite: 1 known prime factor

Factored

Factor	Digits	Bits	Date
64658705994591851009055774868504577	35	115.6	2010-03-26

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	3244 / 9201

Estimated T-Level: 41.8 ⓘ

TF below 2^134 is very unlikely to find new factors due to ECM effort.

Assigned

Assigned	User	Work Type	Stage	% Done	Updated	Expired
2025-07-29	Dr. Dwayne	factor ECM small		0.00 %	2025-08-02
2025-07-26	Jaytholomew	factor ECM small	C4S1	89.77 %	2025-08-02
2025-07-04	Phyxick	factor ECM small	C5S1	84.47 %	2025-07-30
2025-07-03	Buckle	factor ECM small	C4S2	72.96 %	2025-08-01

History

Date	User	Type	Result
2023-06-16	James Heinrich	NF-PM1	B1=20000000, B2=10128934200
2021-09-04	H Michaelson	NF-PP1	Start=2/7, B1=1000000, B2=100000000
2021-04-29	ATH	NF-PP1	Start=6/5, B1=20000000, B2=2000000000
2021-04-23	ATH	NF-PP1	Start=2/7, B1=5000000, B2=500000000
2010-03-25	Buckle	F-ECM	Factor: 64658705994591851009055774868504577