# Integer digit multiplicator

World's simplest integer tool
This browser-based tool multiplies all digits in an integer and prints their product in the output. You can choose between two multiplication modes – single-pass mode that simply multiplies all digits together or multi-pass mode that multiplies all digits together recursively until a single-digit root value is left. You can also skip zeros during the multiplication process to avoid the zero product. Created by math nerds from team Browserling.
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Iterative Multiplication
Apply the multiplication algorithm to the results iteratively to reach a one-digit value.
Zeros in Integers
Skip all zeros in an integer to prevent the zero product.

## What is a integer digit multiplicator?

With this online utility, you can multiply all the digits of an integer and find their product. For example, if the input contains the integer 1237, then after multiplying its digits 1×2×3×8, the output 48 will be produced. The input may contain arbitrary large integers with any number of digits. If the "Repeated Digital Product" option is disabled (by default it's disabled), the program prints this one value and stops. If the "Repeated Digital Product" option is enabled, then the program restarts the algorithm and recursively applies it to the previous product. For example, 1×2×3×8 = 48, then 4×8 = 32, then 3×2 = 6. When a one-digit value is reached, the algorithm stops and displays all intermediate results on the screen. The single-digit integer resulting from repeated multiplications is called the repeated digital root. If there's at least one occurrence of a zero in integer's digits, the entire product becomes zero. If you use the "Skip Zeros" option, then it skips all zero factors and the result is non-zero. Integerabulous!

## Integer digit multiplicator examples

Click to use
Multiply all Integer Digits
In this example, we calculate the digit product of several integers in parallel. Each input integer is on its own line and each result is also on its own line. If there's at least one zero in the integer, then the entire product is turned to zero (see the integer on line four). The signs of integers are preserved in the results (see integers on lines two and three).
32 +234 -666 888808 111111111 252525252525
6 +24 -216 0 1 1000000
Required options
These options will be used automatically if you select this example.
Apply the multiplication algorithm to the results iteratively to reach a one-digit value.
Skip all zeros in an integer to prevent the zero product.
Iterative Digit Multiplication
In this example, we have enabled the "Repeated Digital Product" option that iteratively calculates the multiplicative digit root for seven different integer values. The program automatically determines how many times to apply the multiplication function on the results to get a one-digit value as the final product.
1 12 123 1234 12345 123456 1234567
1 12 → 2 123 → 6 1234 → 24 → 8 12345 → 120 → 0 123456 → 720 → 0 1234567 → 5040 → 0
Required options
These options will be used automatically if you select this example.
Apply the multiplication algorithm to the results iteratively to reach a one-digit value.
Skip all zeros in an integer to prevent the zero product.
Skip Zero Digits
This example contains integers that each have one or more zero-digits. For such integers, the product of digits is always zero. To get a non-zero result, we use the skip zero digits option. It drops zeros from the input and the multiplication algorithm safely produces a non-zero result.
1024 60606 88908 4682068
8 216 4608 18432
Required options
These options will be used automatically if you select this example.
Apply the multiplication algorithm to the results iteratively to reach a one-digit value.
Skip all zeros in an integer to prevent the zero product.
Pro tips Master online integer tools
You can pass input to this tool via ?input query argument and it will automatically compute output. Here's how to type it in your browser's address bar. Click to try!
https://onlineintegertools.com/multiply-integer-digits?input=32%0A%2B234%0A-666%0A888808%0A111111111%0A252525252525&digital-root=false&skip-zeros=false
All integer tools
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Quickly rewrite integer digits using pretty Unicode glyphs.
Quickly generate random two-dimensional integer points.
Quickly generate random three-dimensional integer points.
Quickly print a list of integers that are palindromes.
Quickly convert the given integer to a palindromic integer.
Quickly find all integers in the given text or string.
Quickly make integer digits go in a triangle wave.
Quickly unleash the destructive force of Zalgo on integers.
Quickly find two or more integers that add up to the given integer.
Quickly find several integers that multiply up to the given integer.
Quickly randomize the given sequence of integers.
Quickly mix the order of digits in an integer.
Quickly put integers in increasing or decreasing order.
Quickly sort the individual digits of an integer.
Quickly increase all integers by a certain amount.
Quickly increase individual digits by a certain amount.
Quickly decrease all integers by a certain amount.
Quickly decrease individual digits by a certain amount.
Quickly randomly select an integer from a list of integers.
Quickly create groups from the digits of an integer.
Quickly write integer digits backwards.
Quickly remove one or more digits from an integer.
Quickly replace one or more digits in an integer.
Quickly drop digits from an integer and make it shorter.
Quickly add the thousands separator to integers.
Quickly remove the thousands separator from integers.
Quickly find the largest integer in a list of integers.
Quickly find the smallest integer in a list of integers.
Quickly find the total sum of a bunch of integers.
Quickly find the sum of all the digits in an integer.
Quickly find the total product of a bunch of integers.
Quickly find the product of all the digits in an integer.
Quickly calculate the partial sum of a bunch of integers.
Quickly calculate the partial product of a bunch of integers.
Quickly flip the sign of one or more integers.
Quickly split an integer into chunks of a given length.
Quickly merge partial integers together to form a larger integer.
Quickly round integers up or down to the required precision.
Quickly generate a list of von Neumann ordinals.
Quickly generate a list of Zermelo ordinals.
Quickly generate an ordered sequence of integers.
Quickly generate an ordered list of even integers.
Quickly generate an ordered list of odd integers.
Quickly write an integer spelling in words.
Quickly convert spelled integers to regular integers with digits.
Quickly generate an array of integers for programming.
Quickly find the number of occurrences of digits in integers.
Coming soon These integer tools are on the way
Draw von Neumann Universe
Create a drawing that visualizes von Neumann hierarchy of sets.
Generate a Sudoku Board
Create a sudoku puzzle.
Generate Magic Integers
Create a list of neat-looking integers (called magic integers).
Create Integer n-Tuples
Generate a list of tuples of integers with n elements.
Convert Integers to Unary Base
Quickly convert integers to base one.
Convert Unary Base to Integers
Quickly convert base one to integers.
Convert Integers to Binary Base
Quickly convert integers to base two.
Convert Binary Base to Integers
Quickly convert base two to integers.
Convert Integers to Octal Base
Quickly convert integers to base eight.
Convert Octal Base to Integers
Quickly convert base eight to integers.
Convert Integers to Hex Base
Quickly convert integers to base sixteen.
Convert Hex Base to Integers
Quickly convert base sixteen to integers.
Convert Integers to Base64
Quickly encode integers to base-64.
Convert Base64 to Integers
Quickly decode base-64 to integers.
Change Integer Base
Quickly convert integers to a custom base.
Convert Integers to HTML Entities
Quickly encode integers to HTML encoding.
Convert HTML Entities to Integers
Quickly decode HTML entities to integers.
Convert Integers to URL Encoding
Quickly encode integers to URL (percent) encoding.
Convert URL Encoding to Integers
Quickly decode URL-encoded integers.
Convert Signed Integer to Unsigned
Quickly convert a signed integer to an unsigned integer.
Convert Unsigned Integer to Signed
Quickly convert an unsigned integer to a signed integer.
Create Random Integers
Generate a list of random integers.
Check if an Integer is Symmetric
Check if the given integers are palindromes.
Generate an Integer Matrix
Create a matrix whose entries are all integers.
Generate an Integer Vector
Create a vector with integer coefficients.
Find Integer Average
Quickly calculate the average value of integers.
Find Integer Digit Average
Quickly calculate the average value of integer digits.
Pick an Integer Digit
Quickly randomly select a digit from an integer.
Compare Integers
Find which of the given integers is the biggest or smallest.
Clamp Integers
Limit integer values to a range.
Clamp Integer Digits
Limit integer digit values to a range.
Duplicate Integers
Create multiple copies of the input integers.
Duplicate Integer Digits
Create multiple copies of digits of input integers.
Rotate Integers
Rotate the digits of an integer to the left or right.
Shift Integer Digits
Move the digits of an integer to the left or right.
Subtract Integers
Quickly find the difference of a bunch of integers.
AND Integers
Quickly apply the bitwise AND operation to integers.
OR Integers
Quickly apply the bitwise OR operation to integers.
XOR Integers
Quickly apply the bitwise XOR operation to integers.
NOT Integers
Quickly apply the bitwise NOT operation to integers.
NAND Integers
Quickly apply the bitwise NAND operation to integers.
NOR Integers
Quickly apply the bitwise NOR operation to integers.
XNOR Integers
Quickly apply the bitwise NXOR operation to integers.
Divide Integers
Quickly divide two or more integers.
Divide Integer Digits
Quickly divide the digits of an integer.
Convert an Integer to Ordinal
Add -st, -nd, -rd, -th suffixes to integers to make them ordinals.
Convert an Oridinal to Integer
Remove -st, -nd, -rd, -th suffixes from ordinals to make them ints.
Filter Integers
Find integers that match a filter (greater, less, equal).
Right-align Integers
Position all integers so that they align on the right.
Center Integers
Position all integers so that they align in the middle.
Take Absolute Value of Integers
Turn all integers into positive integers.
Make All Integers Negative
Turn all integers into negative integers.
Convert Integers to Fractions
Rewrite an integer in fractional form.
Convert Fractions to Integers
Extract the numerator and denominator from a fraction.
Find and Replace Integers
Search for all occurrences of an integer and replace it.
Generate Regex from Integers
Create a regex that matches the given integers.
Generate Integers from a Regex
Create integers that match the given regular expression.
Generate Small Integers
Create relatively tiny integers.
Generate Big Integers
Create relatively huge integers.
Generate Oscillating Integers
Create a sequence of oscillating integers, such as 123212321.
Generate a Multi-integer Sequence
Create multiple integer sequences at once.
Introduce Errors in Integers
Slightly change an integer so it has an error.
Introduce Errors in Integer Digits
Slightly change integer digits so there are errors.
Make Integers Fuzzy
Apply fuzzing to integers and add perturbations.
Make Integers Digits Fuzzy
Apply fuzzing to integer digits and add digit perturbations.
Highlight Integers
Highlight Integer Digits
Add highlighting to certain integer digits.
Color Integers
Add color to integers based on a condition.
Color Integer Digits
Add color to individual digits in the given integers.
Draw an Integer Spiral
Make the digits of an integer go in a spiral shape.
Draw an Integer Circle
Make the digits of an integer go in a circle.
Draw an Integer Diamond
Make the digits of an integer go in a diamond shape.
Draw an Integer Box
Fill a box with certain width and height with digits.
Create 2D Integers
Use ASCII art to convert integers to 2-dimensional drawings.
Create 3D Integers
Use ASCII art to convert integers to 3-dimensional drawings.
Decompose an Integer
Decompose an integer into ones, tens, hundreds, etc.
Print Increasing Integers
Generate an ordered list of increasing integers.
Print Decreasing Integers
Generate an ordered list of decreasing integers.
Print Integer Information
Quickly find various information about the given integers.
Find Patterns in Integers
Find hidden patterns of numbers in integers.
Calculate Integer Entropy
Find the Shannon entropy of an integer.