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Prime Finder APK

The description of Prime Finder

Prime Finder lets you find primes of all sizes, and primes that follow formulas and simple digit patterns.

This App has 6 main options:
1) test any number to see if it is prime;
2) find primes with any number of digits;
3) find primes near any number;
4) find primes that follow a digit pattern like
11, 111, 1111, 11111, or 7, 97, 997, 9997 ... etc.;
5) find primes that follow a formula, like
n^2 + 1 for n = 1, 2, ... .
6) make several expressions be prime simultaneously,
like n and n + 2 (twin primes).

These options can handle numbers up to 10,000 digits.

This App also contains data on the first 100 million primes. This App can:
7) find the nth prime (n can be as large as 100 million);
8) count the number of primes up to x (x can be as large as 2,038,074,743).

1) this App uses the fast BPSW primality test to check whether a number is prime;
if it is not prime and has 30 or fewer digits, this App will factor it into primes;
2) you can copy the output to the device's clipboard;
3) it's free, has no ads, no special permissions are requested;
4) you can cancel a long calculation at any time;
5) built-in Help text has information about primes and prime testing,
along with links to more detailed Wikipedia articles.

If you find a bug, email me and I'll get to work on fixing it.

If you have a suggestion for a new feature, email me and I'll consider adding it.

This App has been tested on a Galaxy Tab, and Galaxy ii, 3, and 4 devices.
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Prime Finder APK Version History
Request Prime Finder UpdateRequest Update
Prime Finder 1.0 for Android 2.2+ APK Download

Version: 1.0 (1) for Android 2.2+ (Froyo, API 8)

Update on: 2016-08-10

Signature: e428bdf5372d4342f1b7291c55f0fa88cc40f7fc Prime Finder 1.0(1) apk safe verified

APK File SHA1: 7d765f803d149648bf8efc550cfd7225a855e7e8

Download APK(745.8 KB)

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