Cody

Problems

1 – 19 of 19
Problem Title
Likes
Solvers
Difficulty

Problem 44748. Amicable numbers

Created by: cdeliu

Tags number theory, divisors

1

49

Problem 45250. Be happy

Created by: Asif Newaz

Tags number, happy

2

20

Problem 156. Parasitic numbers

Created by: the cyclist

Tags parasitic

4

262

Problem 1298. P-smooth numbers

Created by: Richard Zapor

Tags primes, find, mod

1

66

Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

Tags prime numbers, cody5, safe prime

11

696

Problem 2733. Evil Number

Created by: Jan Orwat

Tags easy, number theory, oeis

3

223

Problem 2056. Is this number Munchhausen?

Created by: Ted

Tags math, narcissistic number, munchhausen

2

156

Problem 44836. Iccanobif numbers 1

Created by: James

Tags fibonacci, iccanobif

3

50

Problem 1804. Fangs of a vampire number

Created by: Andrew Newell

Tags factors, number theory

4

73

Problem 165. Woodall number

Created by: the cyclist

Tags woodall number theory

1

143

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

Created by: @bmtran (Bryant Tran)

Tags projecteuler, plus15

1

68

Problem 45249. Frugal number

Created by: Asif Newaz

Tags number, frugal, economical

2

29

Problem 2595. Polite numbers. Politeness.

Created by: Jan Orwat

Tags number theory, oeis

7

130

Problem 249. Project Euler: Problem 9, Pythagorean numbers

Created by: Doug Hull

Tags projecteuler

5

716

Problem 1477. Champernowne Constant

Created by: G K

Tags math

2

58

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

19

2325

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

Created by: James

Tags primes, projecteuler, circular reasoning

7

280

Problem 81. Mandelbrot Numbers

Created by: Cody Team

Tags matlab, fractals

11

1077

Problem 1742. Generate a Parasitic Number

Created by: James

Tags parasitic, cyclic

5

82
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