Cody

Problems

1 – 19 of 19
Problem Title
Likes
Solvers
Difficulty

Problem 44748. Amicable numbers

Created by: cdeliu

Tags number theory, divisors

1

56

Problem 45250. Be happy

Created by: Asif Newaz

Tags number, happy

2

23

Problem 1298. P-smooth numbers

Created by: Richard Zapor

Tags primes, find, mod

1

75

Problem 156. Parasitic numbers

Created by: the cyclist

Tags parasitic

4

275

Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

Tags prime numbers, cody5, safe prime

11

708

Problem 44836. Iccanobif numbers 1

Created by: James

Tags fibonacci, iccanobif

3

54

Problem 2733. Evil Number

Created by: Jan Orwat

Tags easy, number theory, oeis

3

235

Problem 2056. Is this number Munchhausen?

Created by: Ted

Tags math, narcissistic number, munchhausen

3

175

Problem 165. Woodall number

Created by: the cyclist

Tags woodall number theory

1

148

Problem 1804. Fangs of a vampire number

Created by: Andrew Newell

Tags factors, number theory

4

78

Problem 45249. Frugal number

Created by: Asif Newaz

Tags number, frugal, economical

2

32

Problem 1082. Lychrel Number Test (Inspired by Project Euler Problem 55)

Created by: @bmtran (Bryant Tran)

Tags projecteuler, plus15

1

80

Problem 2595. Polite numbers. Politeness.

Created by: Jan Orwat

Tags number theory, oeis

7

145

Problem 249. Project Euler: Problem 9, Pythagorean numbers

Created by: Doug Hull

Tags projecteuler

6

824

Problem 1477. Champernowne Constant

Created by: G K

Tags math

2

65

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

21

2537

Problem 1095. Circular Primes (based on Project Euler, problem 35)

Created by: James

Tags primes, projecteuler, circular reasoning

7

296

Problem 81. Mandelbrot Numbers

Created by: Cody Team

Tags matlab, fractals

13

1287

Problem 1742. Generate a Parasitic Number

Created by: James

Tags parasitic, cyclic

6

73
1 – 19 of 19