Background
The number 1729 is the Hardy-Ramanujan number. An amazing property of it was discovered by S. Ramanujan (who is widely regarded as the greatest Indian mathematician1), when G.H. Hardy paid a visit to him in a hospital. In Hardy's own words:
I remember once going to see him when he...
A Zeisel Number is a square-free integer with prime factors that fall into the pattern:
P(n)=a*P(n-1) + b
where a and b are integers and n is the index number of each prime factor in the factorization, sorted from lowest to highest. For the purpose of determining Zeisel numbers, p(0)=1.
The Ze...
JavaScript ES6, 59 bytes
x=>(q=eval([...x].join`+`)+'')*([...q].reverse().join``)==x
Adding explanation one sec.
In schools across the world, children type a number into their LCD calculator, turn it upside down and erupt into laughter after creating the word 'Boobies'. Of course, this is the most popular word, but there are many other words which can be produced.
All words must be less than 10 letters lo...
Create a program to greet someone with the words "Hello Player!" when they run the program. However you cannot use any letters in the alphabet in the displayed message so you must use keys like ( or - to shape out the letters. An example of a letter made of these keys is below:
/\
/--\ = w...
Why reinvent the wheel? There even is a standard for a set of sixteen colors, of which you could pick ten. This is the ANSI set http://en.wikipedia.org/wiki/ANSI_escape_code#Colors
The ANSI color are equally distributed on the RGB cube, which is, I think, better suited for this problem than the ...
