Prime Number Counter
v1.5 · 121.4 KB · code 5
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File information
UpdatedMay 28, 2024
PublishedOct 20, 2022
Packagecom.useless.primes
Versionv1.5 (5)
Size121.4 KB
MD591722d4537beaea4b7c1b67798d60660
Min SDK8
Malware scanTRUSTED
Signature SHA1DC:D7:F6:A2:41:27:04:55:3F:35:88:19:9D:08:21:65:79:E1:CD:64
SignerCN=Unknown, OU=Unknown, O=Unknown, L=Unknown, ST=Unknown, C=Unknown
Total downloads10,000
This version10,000
DeveloperFunCoolApps
Age ratingEveryone
What's new in v1.5
Support new Android versions
Security scan
TRUSTED
- Developer signature verified 2024-05-28
- Signature SHA1 DC:D7:F6:A2:41:27:04:55:3F:35:88:19:9D:08:21:65:79:E1:CD:64
- File MD5 91722d4537beaea4b7c1b67798d60660
How to install Prime Number Counter v1.5 on Android API 8+
Takes about 2 minutes. You'll need roughly 121.4 KB of free storage.
- Grab com.useless.primes_5.apk — hit the Download button above (121.4 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 91722d4537beaea4…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.useless.primes_5.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=Unknown, OU=Unknown, O=Unknown, L=Unknown, ST=Unknown, C=Unknown. 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 TRUSTED).
- Done — open Prime Number Counter — tap Open on the install screen, or find the Prime Number Counter icon in your app drawer.
Common install errors for Prime Number Counter
- "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 8 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.