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Prime Numbers Research

Chrome extension by MB · Productivity · Education

A Chrome extension in Productivity · Education with 6 users, barely installed. Audience over the last 30 days: +2.

No site access is declared in the manifest, so it cannot read the pages you open on its own.

What the developer says, and 1 screenshot

Loading from the Chrome Web Store. Open the listing if it does not appear.

Users
6
Rating
not rated yet
Users, last 30 days
+2
Version
1.0
Updated in the store
2025-02-20
Published
2025-02-09
Manifest
V3
Browser access
No permissions declared

How it has moved

Users
+2 since 30.09
4-6 · 10 readings
  1. 2026-10-095
  2. 2026-10-104
  3. 2026-10-165
  4. 2026-10-186
  5. 2026-10-195
  6. 2026-10-216
  7. 2026-10-225
  8. 2026-10-234
  9. 2026-10-245
  10. 2026-10-306
Users
+2 since 31.08
4-6 · 23 readings
  1. 2026-08-314
  2. 2026-09-035
  3. 2026-09-044
  4. 2026-09-065
  5. 2026-09-074
  6. 2026-09-085
  7. 2026-09-094
  8. 2026-09-155
  9. 2026-09-174
  10. 2026-09-205
  11. 2026-09-214
  12. 2026-09-265
  13. 2026-09-284
  14. 2026-10-095
  15. 2026-10-104
  16. 2026-10-165
  17. 2026-10-186
  18. 2026-10-195
  19. 2026-10-216
  20. 2026-10-225
  21. 2026-10-234
  22. 2026-10-245
  23. 2026-10-306

A dot marks a day the store showed a different number. Between them the line carries the last one forward: we read every listing up to 2 times a day and record a point only when something moves. History beyond ninety days is in the app.

What it can reach

No site access is declared in the manifest, so it cannot read the pages you open on its own.

We have not read this listing's manifest since we started keeping permission names. The counts above come from the last time we did.

The full permission history for this extension

What changed recently

Nothing has moved on this listing since we started watching it.

The publisher

MB publishes 12 listings we track, 318 users between them.

  1. WhatColour MB · Productivity · Tools · published 2025-02-19 98 users
  2. CMYK Colour Viewer MB · Productivity · Tools · published 2025-03-14 69 users
  3. Convert PNG to ICO MB · Productivity · Tools · published 2025-03-03 36 users
Show 5 more from this publisher
  1. RGB Colour Viewer MB · Productivity · Tools · published 2025-02-10 33 users
  2. SizeWindow MB · Productivity · Tools · published 2025-01-22 29 users
  3. Syndesi Link MB · Productivity · Tools · published 2025-01-08 13 users
  4. Gigantic Integer Calculator MB · Productivity · Education · published 2025-01-31 8 users
  5. Happy Numbers Research MB · Productivity · Education · published 2025-01-15 8 users

Like this one

Listings the catalog judges closest in what they say they do.

  1. PrimeOrNot – Prime Number Lab Describes nearly the same job, smaller audience 2 users (last published figure)
  2. Prime Numbers Describes nearly the same job, smaller audience 4 users
  3. Happy Numbers Research Describes nearly the same job, smaller audience 8 users
  4. Prime Time Describes nearly the same job, smaller audience 8 users ★ 5.0
  5. PlotNerd Companion Describes a similar job, smaller audience 26 users

The top 5 only. The full comparison, with why each one is close, is on the alternatives page; ranking a whole neighbourhood by your own criteria is in the app.

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The badge shows the audience and rating from our last pass over the store and links back to this page.

Users and rating on Ext Ops Panel

Markdown

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HTML

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Figures come from our own regular passes over the public Chrome Web Store listing, last read on . The store last changed these figures on 2026-10-30. We publish no contact details for extension developers.

Where the data comes from: how the catalog is built