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Online Number Tools is the OnlineTools.com sub-site for number sequences, matrix operations, primality, fractions, base conversion, and arithmetic operations.
Lists all divisors of a given number.
Generates a sequence of numbers in arithmetic progression.
Tests whether a number is a palindrome.
Generates the sequence of perfect cubes.
Generates a sequence of even numbers.
Generates Fibonacci numbers up to a chosen index.
Generates Fibonacci-like series with custom starting values.
Generates a sequence of numbers in geometric progression.
Computes the GCD of two or more numbers.
Generates a sequence of consecutive integers.
Computes the LCM of two or more numbers.
Calculates members of any linear recurrence series.
Generates the look-and-say sequence by describing each digit run.
Generates Lucas series numbers up to a chosen index.
Builds a palindrome from a starting number by reflecting digits.
Generates a sequence of odd numbers.
Generates numbers in the form 10^n.
Generates numbers in the form 2^n.
Tests whether a given number is prime.
Computes the prime factorisation of any number.
Generates a sequence of prime numbers.
Generates the sequence of perfect squares.
Adds a list of fractions and returns the simplified sum.
Calculates digits of the golden ratio φ to arbitrary precision.
Calculates digits of π to arbitrary precision.
Calculates digits of Euler's number e to arbitrary precision.
Multiplies all the digits of the input numbers.
Converts a number from any base to any other base.
Converts base-10 numbers to negabase-10 representation.
Spells out cardinal and ordinal numbers in English.
Expresses a number in the form 10^x.
Expresses a number in the form 2^x.
Generates a diagonal identity matrix of chosen size.
Computes the determinant of a square matrix.
Computes the inverse of any square matrix.
Computes the transpose of a matrix by swapping rows and columns.
Generates a matrix populated with random numbers.