
Least Common Multiple
Georg Kiefer · an.LcmX
- Same certificate as v24.10, which matches Google Play Details
At a glance
- Latest version
- v26.5.2 (33)
- Updated
- May 19, 2026 (5 months ago)
- APK size
- 2.9 MB
- Requires
- Android 6.0+ (API 23)
- CPU support
- Any (no native code)
- Category
- Education (app)
- Listed since
- Jan 23, 2020 (at least)
- Permissions
- 4
- Website
- bit.ly/gk-apps
- Developer contact
- [email protected]
- Privacy
- Developer's privacy policy
About this APK
Least Common Multiple is an app by Georg Kiefer in the Education category, listed since at least January 2020. It has no native code, so it runs on any Android processor.
Since version 24.4, the APK grew from 626.3 KB to 2.9 MB and the minimum Android version rose from 4.4 to 6.0. It asks for 4 permissions, none of them sensitive. It asks for the same permissions as version 24.10. The app can read the advertising ID that ad and analytics services use.
What's new in v26.5.2
Description
From the listing uploaded by “catappult”.
Version history
3 versions are listed, going back to v24.4. Since v26.5.2 it requires Android 6.0+.
Security & authenticity
Signing certificate
- Certificate issued to “Georg Kiefer” This is the certificate of the Google Play version.
- Same certificate as v24.10, which matches Google Play v24.10 · v24.4
Store checks and file details
- Developer signature verified May 19, 2026
- Signed byCN=Georg Kiefer, L=Koblenz, ST=Germany, C=DE
- Signing certificate (SHA-1)75:C9:81:67:02:93:40:62:AE:2C:C2:9B:5F:B5:47:43:3B:A7:F0:52
- File MD5e6fceb32682753d0ddd5dbdf51f9e92e
- Uploaded by “catappult” Platinum tier · 1,377 followers · uploading since 2018
Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.
Permissions (4)
Least Common Multiple requests 4 permissions, none of them sensitive.
- Advertising ID com.google.android.gms.permission.AD_ID
- Full network access android.permission.INTERNET
- Google Play install referrer com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE
- View network connections android.permission.ACCESS_NETWORK_STATE
Required hardware & features
- Basic touch input android.hardware.faketouch
Least Common Multiple APK: questions and answers
Is there a version of Least Common Multiple for older Android phones?
The current version needs Android 6.0 or later. Version 24.10 is the newest listed build that installs on Android 5.0 and later. Get version 24.10 · All versions
Can I install this APK over the version I already have?
Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.
Is the Least Common Multiple APK safe?
No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. It is signed with the same certificate as version 24.10, whose signature matches the Google Play version. After downloading, check that the file's MD5 is e6fceb32682753d0ddd5dbdf51f9e92e.