Lucas Lehmer Test for Mersenne

Damian Silvestre

0.00

0 reviews

500+
Downloads

Free

LL Test

This app is currently not available on Google Play.

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About Lucas Lehmer Test for Mersenne

Lucas Lehmer Test for Mersenne was an education app developed by Damian Silvestre. It was removed from Google Play Mar 25, 2024 and is no longer available for download.

Download Statistics

Lucas Lehmer Test for Mersenne had been downloaded 720 times before it became unavailable.

User Ratings

The app had no ratings.

App Information

Lucas Lehmer Test for Mersenne was free to download. The APK download size was 154.37 kB. The last available version was 2. The last update was on January 3, 2013.

Technical Requirements

Lucas Lehmer Test for Mersenne required Android 2.2+ or higher. The app had a content rating of Everyone. The app had been available on Google Play August 2012.

Description

It performs the standard LL test.
Given an exponent X, it checks if 2^X - 1 is a mersenne prime number.
The code is not optimized.
Warning: No warranty, use at your own responsability.

Recent changes:
Now should work with older versions of android (1.6 or later), and I added as scroll bar to read the whole text.

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More data about Lucas Lehmer Test for Mersenne

Price	Free to download
Total downloads	720
Rating	No ratings
Version	2
APK size	154.4 KB
Number of libraries	1
Designed for Android	2.2+
Suitable for	Everyone
Ads	NO ads

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Downloads over time

Lucas Lehmer Test for Mersenne has been downloaded 720 times.

Changelog of Lucas Lehmer Test for Mersenne

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Developer information for Damian Silvestre

Damian Silvestre

Website

Address:

Comments on Lucas Lehmer Test for Mersenne for Android

★★★★★ Yes, it does test I ran the APK through a decompiler, and can see that it is really running the LL test. The apparently low CPU usage can likely be explained by the fact that the app is really inefficient: it uses Java's BigInteger class (which is quite slow in any case), with this at the heart of it: s = s.multiply(s).subtract(BigInteger.valueOf(2L)).mod(mp); This is the LL test, but not the best way to implement it: lots of garbage and unnecessary calculations here. But the app doesn't claim to be anything else. "The code is not optimized."

★★★★★ Un gran programa para todos los que nos gustan los numeros primos.

★★☆☆☆ Fake, deceiving, does not really test. Uses a list of known Mersenne primes. Probably as an array. Uses knowledge that the algorithm is approximately n^2 time completity (without FFT multiplication) and makes the loading bar take longer for higher numbers. You can look at the CPU usage overlay or even a system monitor app and you can see that it is not using any noticeable CPU time. If it were real, it would provide feedback like Prime95 does and would actually tell you the residue. This developer is the scum of the earth. I will be reporting.

Technologies used by Lucas Lehmer Test for Mersenne

Lucas Lehmer Test for Mersenne is requesting 0 permissions and is using 1 libraries.
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