Comparison

Mersenne Primes vs Pax Bible

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Mersenne Primes

Explore and view the digits of all known Mersenne prime numbers. Witness the generation process for extremely large primes, page by page, and locate specific digits by their sequence number.

Highlights
  • View all digits of known Mersenne Primes
  • Witness prime number generation process
  • Page-by-page digit exploration
  • Locate specific digits by sequence number
  • Generates primes using mobile CPU
Features
Read full description

Prime numbers are fundamentally important in mathematics and they are also very beautiful numbers. The largest known prime number we know now is 2^77232917-1 and it is a Mersenne Prime (a prime number of the form Mn = 2^n − 1 for some integer n which is also a prime number). The current largest Mersenne Prime number M77232917 (found in 2017 by GIMPS - Great Internet Mersenne Prime Search) has 23,249,425 digits. There is no website that can show you all the digits in a webpage because it is too huge. This app will generate and show you all digits of all known Mersenne Primes. You can also have close look of every digit page by page. The digits will be generated by your mobile phone's CPU and saved to your storage card. You will witness the whole process of the generation for the big ones (i.e. M77232917 , M74207281, M57885161, M43112609, M42643801, M37156667, ...), because it might need one day or two to print the digits all. You can also locate a digit by its sequence number. e.g. the 23249268th digit of M77232917 is 8.

About

Pax Bible

Features
Read full description

The Pax Bible apps offer many cool features, yet appear modest and straightforward. Free of charge and ad-free. Ten Bible translations are pre-installed, and over 2000 more in over 800 languages can be easily imported. The app itself is currently available in 6 languages. The iOS app offers the full range of functions also when offline. A login or a registration is not necessary. One of the outstanding features is the comparison function. This allows two translations to be read synchronously side by side, in the same or a different language. If the selected translations contain the Strong numbers for the Hebrew and Greek root words, tapping on a word will also highlight the corresponding word in the other column. The search function offers simple yet powerful options, such as searching for multiple words that must be close to each other, regardless of their order. When the comparison function is active, both translations are searched simultaneously. The words or parts of sentences found are highlighted in color. In addition, individual words, verses or chapters can be marked with freely definable colors. For words, you can choose whether they should be displayed accordingly in just one verse, in one chapter or in the entire Bible. Thanks to the Strong numbers, the colors of the words in other translations are also displayed. Other functions include: • Highlight Jesus' words in color • Extensive list of parallel passages • Searchable notes on verses • Roll the dice to select a "random" verse • Reading plans (e.g. PowerHour) • Create QR codes: If these are pictured from a screen with the camera app, the installed Pax Bible app or otherwise a browser opens at the selected location • Read aloud function (not available for all languages) • Dimmed mode • Bible statistics with all words, sorted by frequency • Super fast None of the functions mentioned are presented in an intrusive way, so it is easy to focus on God's word, which is the main purpose of the Pax Bible apps. May God touch many hearts through the Pax Bible apps!

Screenshots

Mersenne Primes4 screens
Pax Bible4 screens

Verdict

The call

The clearest difference is in-app purchases: Pax Bible at none against Mersenne Primes's 1. Mersenne Primes's advantage is iOS requirement (9.0 vs 15.6). On price, update cadence, ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Mersenne Primes sells 1 one-off in-app purchase. Pax Bible asks for nothing beyond the download.

UpkeepUpdate frequency

Mersenne Primes ships an update weekly, Pax Bible every 11 days. The most recent releases landed on November 2, 2026 and November 4, 2026 respectively.

Scorecard2 real differences · 8 level
Mersenne Primes versus Pax Bible: the parameters behind the verdict, then further details
ParameterMersenne PrimesPax Bible
PriceFreeFree
Rating5.0 (1 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings1 — better—
Update frequencyWeekly — betterEvery 11 days
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size60 MB90 MB
Age rating4+4+
Developer华 魏Pax Bible Verein

In-app purchases

1 purchases

Mersenne Primes

One-time1
  • One Support$0.99
None

Pax Bible

No in-app purchases

Questions

Is Mersenne Primes free?
Mersenne Primes is free to download, with in-app purchases available.
Is Pax Bible free?
Pax Bible is free to download, with no in-app purchases.
Do Mersenne Primes or Pax Bible have ads?
Neither Mersenne Primes nor Pax Bible shows ads.
Which is updated more often, Mersenne Primes or Pax Bible?
Mersenne Primes ships an update weekly, and Pax Bible every 11 days. Most recently, Mersenne Primes was updated on November 2, 2026 and Pax Bible on November 4, 2026.

Other comparisons