to make the study and search for numbers with special properties more convenient and efficient.
What to do?
What to do?
Use the input field on the bottom to enter some properties of numbers. Hit enter to calculate all numbers to 1000 that fullfill your conditions. For example enter
to return all squares to 1000. Or you can use
to return all cubes. You could also enter
dsum == 10
to find all numbers with a digit sum of 10. The power lies in the possibility to combine properties. Enter
square cube dsum == 10
to find all numbers that are squares and cubes and have a digit sum of 10. Following operators are possible:
== , < , > , >= , <= , !=
Besides the resulting number squence you will see the length of the squence and the seed: The seed is the human-readable input converted into a computer code. You can also enter the code in the terminal. For example use
to display all prime numbers that contain exacly two digits. For further help type
even, odd even, odd numbers square, cube perfect squares, cubes noprime, prime (non) prime numbers power n number is nth power exp n number is nth exponent mod a b modulo, x mod b == a divsum <> n divisor sum divrat <> n ratio of divsum and number divcount <> n number of divisors dsum <> n digitsum dcount <> n number of distinct digits omega <> n number of distinct prime factors pcount <> n number of prime factors gpf <> n greatest prime factors lpf <> n least prime factors mopf <> n most occurring prime factors lopf <> n least occurring prime factors rnd random condition
n < 100 : integer value <> : == , < , > , >= , <= , !=