Big Number Calculator+ vs What Numbers:number theory Uso & Estadísticas
“Big Number Calculator+” is an application that can calculate very large numbers.
The format that can be used is decimal (integer). The calculation functions that can be used are addition, subtraction, multiplication, and division. The number of digits is limited to 66000 digits. Only plus signs can be used. Minus signs cannot be used.
The calculation engine used in the calculation can be selected from “Swift” and “Objective-C”. You can also view the source code of the calculation engine. Please use at your own risk.
Only numerical values (1,2,3,4,5,6,7,8,9,0) are extracted from the input data. You can optionally enter non-numeric characters. It can be used as a delimiter.
It can be load from a file in addition to direct input.
Input data and calculation results are automatically formatted for printing and saving. The save file is saved in text format (.txt).
"Big Number Calculator" for macOS is also available.
Main Specifications
• iOS 13 and iPadOS 13 or later
Main functions
Maximum number of digits of input data
• 66000 digits
Calculation function
• Addition, subtraction, multiplication, division
The algorithm uses the "brush calculation method".
The division is displayed as “quotient and remainder".
Calculation engine
• “Swift” and “Objective-C” can be selected.
Numeric format
• Decimal number (integer)
Only the plus sign can be used as the sign. Minus signs cannot be used.
Numerical input
• Only numerical values (1,2,3,4,5,6,7,8,9,0) are extracted.
• Characters other than numerical values can be entered in the option settings. Can be used as a delimiter.
Load from file
• The file types that can be load are "txt, rtf, rtfd".
Data replacement and registration
• Input data and calculation results can be replaced by dragging and dropping.
It can also be registered in the register.
Separation
• Separate with the selected delimiter (comma and space).
• Separate by the selected number of separation digits (3, 6, 10, 16, 24).
Any number of separation digits can be entered.
Printing
• Input data and calculation results are automatically formatted.
Save
• Input data and calculation results are automatically formatted.
• The file format is text (.txt) format.
Source code
• The source code of the calculation engine can be displayed.
Please use at your own risk.
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With this application, you can quickly find out what number the number corresponds to. For example, if you search for "7", the app will tell you if the number is a prime number, a palindrome number, a happy number, a harshad number, etc.
・Corresponding Number Theory
Prime number
Fibonacci number
Palindrome number
Armstrong number
Happy number
Sad number
Circular Prime Number
Perfect Square
Perfect Cube
Harshad Number
Duck Number
Spy Number
Automorphic number
Strobogrammatic Number
Disarium Number
Emirp Number
・Functions
1. when you enter a number, you can immediately determine what the number theory is.
2. displays a modal with the meaning of the number theory and an example when tapped.
・Displays a modal with the meaning of the number theory and an example when tapped.
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1. Prime number
2. A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself.
3. Example: 2,3,5,7...
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1. Harshad Number
2. A Harshad number is a number that is divisible by the sum of its digits.
3. Example: 18...
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1. Armstrong number
2. An Armstrong number is a number that is equal to the sum of cubes of its digits.
3. Example: 153,370,371,407...
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1. Palindrome number
2. A palindrome number is a number that is the same when read forwards or backwards.
3. Example: 121,12321...
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1. Automorphic number
2. An automorphic number is a number whose square "ends" in the same digits as the number itself.
3. Example: 5, 6, 25, 76, 376, 625
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1. Emirp Number
2. An emirp number is a prime number that results in a different prime when its digits are reverse.
3. Example: 13, 17, 31, 37...
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Big Number Calculator+ VS. 
What Numbers:number theoryenero 10, 2025