Problems

1 – 9 of 9

Problem Title Likes Solvers Difficulty

Problem 2056. Is this number Munchhausen Narcissistic?

Created by: Ted

Tags math, narcissistic number, munchhausen

148

Problem 156. Parasitic numbers

Created by: the cyclist

Tags parasitic

257

Problem 2690. Armstrong Number

Created by: VIVEK RUHELA

Tags arithmetic, basic matlab

265

Problem 2733. Evil Number

Created by: Jan Orwat

Tags easy, number theory, oeis

218

Problem 2593. Polite numbers. N-th polite number.

Created by: Jan Orwat

Tags number theory, a138591

130

Problem 166. Kaprekar numbers

Created by: the cyclist

Tags kaprekar

245

Problem 2595. Polite numbers. Politeness.

Created by: Jan Orwat

Tags number theory, oeis

123

Problem 1925. Smith numbers

Created by: Sky Sartorius

Tags sum, factors

355

Problem 1742. Generate a Parasitic Number

Created by: James

Tags parasitic, cyclic

1 – 9 of 9

Trial software

Difficulty Rating

Problem Groups

Problems

Problem 2056. Is this number Munchhausen Narcissistic?

Problem 156. Parasitic numbers

Problem 2690. Armstrong Number

Problem 2733. Evil Number

Problem 2593. Polite numbers. N-th polite number.

Problem 166. Kaprekar numbers

Problem 2595. Polite numbers. Politeness.

Problem 1925. Smith numbers

Problem 1742. Generate a Parasitic Number