Prime Number Tester
v1.02 · 304.3 KB · code 3
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File information
UpdatedJul 27, 2019
PublishedJul 27, 2019
Packagecom.primenumbertester
Versionv1.02 (3)
Size304.3 KB
MD504248e3b0ce649ab72aa8eb89c15ed30
Min SDK20
Malware scanUNKNOWN
Signature SHA13B:7A:04:3E:8F:E5:65:C0:BB:4E:E1:C5:04:A3:FB:FA:26:2C:5D:A8
SignerCN=Cliff Koperski
Total downloads10
This version10
DeveloperCliff Koperski
Age ratingEveryone
What's new in v1.02
Updated API levels
Security scan
UNKNOWN
- Developer signature verified 2019-07-27
- Scanned for malware 2021-12-31 09:38:34
- Signature SHA1 3B:7A:04:3E:8F:E5:65:C0:BB:4E:E1:C5:04:A3:FB:FA:26:2C:5D:A8
- File MD5 04248e3b0ce649ab72aa8eb89c15ed30
How to install Prime Number Tester v1.02 on Android API 20+
Takes about 2 minutes. You'll need roughly 304.3 KB of free storage.
- Grab com.primenumbertester_3.apk — hit the Download button above (304.3 KB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 04248e3b0ce649ab…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.primenumbertester_3.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN=Cliff Koperski. If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as UNKNOWN).
- Done — open Prime Number Tester — tap Open on the install screen, or find the Prime Number Tester icon in your app drawer.
Common install errors for Prime Number Tester
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android API 20 or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.