factordbrpc · fdb
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database
counted, not estimated - as of 05:31 UTC, updated every minute
Primes: 2,139,325,522 (20.12%)Probable primes: 1,349,157 (0.01%)Composite, factor known: 7,760,834,608 (72.99%)Composite, no factor known: 714,369,354 (6.72%)Unknown / untested: 17,298,909 (0.16%)
10,633,177,550 total
Prime Primes 2,139,325,522 20.12% PRP Probable primes 1,349,157 0.01% CF Composite, factor known 7,760,834,608 72.99% Composite Composite, no factor known 714,369,354 6.72% Unknown Unknown / untested 17,298,909 0.16%
Show distribution of digits by type →
trial factoring
how far each GCD sieve level has reached (it scans smallest numbers first)
BaseReached up to
1M 24 digits
10M 200,000 digits
100M 200,000 digits
1G 200,000 digits
10G 24 digits
10-20G 200,000 digits
20-30G 200,000 digits
30-40G 200,000 digits
40-100G 23 digits
smallest
DigitsNumber
PRP Smallest probable prime 20 5173458385…93<20>
Composite Smallest composite, no factor known 19 9468276082…01<19>
Unknown Smallest unknown / untested 301 7906043445…11<301>
certificates
Primo / ECPP primality certificates - feel free to upload as many as you want · leaderboards
VerifiedPendingProcessing
8,438,411 8,387 2
Verifying #1100000000845420180step 195 of 1,486 (13.1 %) · frontier at 18,931 digits · running 1 h 8 min
Verifying #1100000001147024448step 415 of 1,098 (37.8 %) · frontier at 14,867 digits · running 1 h 14 min
Browse all certificates →
worker queue
background jobs waiting right now - if these are high, your request may wait behind others
QueueWaiting
Primality proofs (N-1 / N+1 / combined)0
PRP tests0
Both kinds share the same background workers (capacity 10,000 queued jobs).
primality proofs
numbers proven prime by a deterministic special-form test (no certificate needed)
MethodProvenLargest (digits)
N-1 (Pocklington) 834,824 199,999
N+1 (Morrison) 248,411 420,921
Combined N-1/N+1 (Brillhart-Lehmer-Selfridge) 24,371 105,885
All methods 1,107,606
Browse all proofs →
found factors
factors found by ECM / P±1, each validated by its curve group order
MethodFound
ECM (Montgomery) 77,842
ECM (Edwards) 10,157
P-1 (Pollard) 391,593
P+1 (Williams) 51,809
All methods 531,401
Browse all found factors →

Disk usage

Data3.2 TB
Index1.0 TB
Total4.2 TB

System load

1 min342.55
5 min347.70
15 min350.18

RPC server

Calls per second17.0

Mean over the last minute, every call counted (the site's own pages included).

imports
external data feeds and when each was last imported
SourceLast importDetails
mersenne.ca 57 min ago (2026-10-06 04:34 UTC) 7 dates, 154 factors, 94 ECM
From the command linefdb · curl
fdb
fdb status
curl
curl -s 'https://factordb.com:4059/rpc' -H 'Content-Type: application/json' -d '{"jsonrpc":"2.0","id":1,"method":"status","params":{}}'