mersenne.ca mirror of http://factordb.com/status.php 2026-08-26T20:04:06+00:00
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Some database statistics (This is no longer accurate - InnoDB does not maintain an exact row count.)
Primes (List) 2,220,130,713
Probable primes (List) 1,130,726
Composite numbers with known factors 6,075,911,222
Composite numbers without known factors (List) 868,124,888
Numbers with status unknown (List) 31,355,730
Total 9,196,653,279
Show distribution of digits by type

Smallest ones
Smallest probable prime 20 digits (31870856966516346509<20>)
Smallest composite without known factors 19 digits (3238076968044838243<19>)

Interesting ones
Probable primes that failed primality proof or had a factor 713,810
Odd perfect numbers detected 0

Insert queue
Entries queued 0
Total delay -

Primality proofs
Method done pending
N-1-method 834,627 0
N+1-method 248,363 0
Combined N-1/N+1-method 24,370 0
PRP test 77
Show queue
Certificate 9,290,860 0
Certificates by user software

Found factors
Method Total
ECM (Montgomery) 77,571
ECM (Edwards) 9,696
P-1 389,122
P+1 51,860

The database is running on
CPU Ryzen 5800X
Ram 128GB DDR4
SSD 5x4TB Micron U.2 (7300 Pro), Raid 5

Disk usage
Database data 6,745,147MB
Database index 1,120,490MB

System load
Load average, last minute 38.4
Load average, last 5 minutes 38.92
Load average, last 15 minutes 35.25

Show internal configuration
Distribution of probable primes
Distribution of composite numbers
Do quick self-test
Tool: calculate group order
Tool: Next prime above N


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