Prime Number Checker

Mode

Single Number Range Batch

Enter Number

Show factors for non-primes Save to history

Output format

Chart options

Highlight Mersenne primes

Plot threshold (max points before bucketing) Bucket count (if bucketing)

If points > threshold, data will be bucketed into bucketCount bins for plotting.

Result

Visualization

Chart plots primes (or bucket counts) — first 5000 points shown by default to preserve performance.

All processing is client-side using math.js and native JS. Range cap: 1,000,000. Batch cap: 100 numbers. Exports limited to 10MB.