Cody

# Problems

1 – 45 of 45
 Problem Title Likes Solvers Difficulty

#### Problem 45192. check whether a number is a pentatope number

Created by: Asif Newaz

Tags pentatope

1

29

#### Problem 1012. Determine if input is a perfect number

Created by: Binbin Qi

1

155

#### Problem 2061. Narcissistic number ?

Created by: Jean-Marie Sainthillier

2

258

#### Problem 896. Sophie Germain prime

Created by: Aurelien Queffurust

3

307

#### Problem 45191. generate nth pentatope number

Created by: Asif Newaz

2

33

#### Problem 1008. Determine if input is a Narcissistic number

Created by: Binbin Qi

Tags mod floor

2

129

#### Problem 44748. Amicable numbers

Created by: cdeliu

1

39

3

239

#### Problem 45223. find nth even fibonacci number

Created by: Asif Newaz

1

39

Created by: Ted

2

146

#### Problem 45253. Pell numbers

Created by: Asif Newaz

2

36

#### Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

10

680

#### Problem 45229. Bell Triangle

Created by: Asif Newaz

1

27

#### Problem 44836. Iccanobif numbers 1

Created by: James

3

46

#### Problem 1804. Fangs of a vampire number

Created by: Andrew Newell

4

65

#### Problem 2690. Armstrong Number

Created by: VIVEK RUHELA

7

262

#### Problem 2733. Evil Number

Created by: Jan Orwat

3

216

#### Problem 156. Parasitic numbers

Created by: the cyclist

Tags parasitic

4

255

#### Problem 1096. Largest Twin Primes

Created by: Des Mc Manus

Tags primes

2

243

#### Problem 525. Mersenne Primes

Created by: Drew Weymouth

3

262

#### Problem 45250. Be happy

Created by: Asif Newaz

Tags number, happy

2

18

Created by: goc3

9

590

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

Created by: Jan Orwat

2

129

#### Problem 1298. P-smooth numbers

Created by: Richard Zapor

Tags primes, find, mod

1

59

#### Problem 166. Kaprekar numbers

Created by: the cyclist

Tags kaprekar

4

243

Created by: Tim

1

128

#### Problem 45194. Cantor counting

Created by: Asif Newaz

2

19

#### Problem 165. Woodall number

Created by: the cyclist

1

138

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

Created by: @bmtran (Bryant Tran)

1

62

#### Problem 1925. Smith numbers

Created by: Sky Sartorius

Tags sum, factors

4

250

#### Problem 249. Project Euler: Problem 9, Pythagorean numbers

Created by: Doug Hull

5

363

#### Problem 2595. Polite numbers. Politeness.

Created by: Jan Orwat

6

121

#### Problem 1190. Golomb's self-describing sequence (based on Euler 341)

Created by: James

3

114

#### Problem 74. Balanced number

Created by: Cody Team

Tags matlab

18

2059

#### Problem 45249. Frugal number

Created by: Asif Newaz

2

27

#### Problem 1742. Generate a Parasitic Number

Created by: James

4

76

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

Created by: James

6

155

#### Problem 1825. Find all vampire fangs

Created by: Andrew Newell

2

47

#### Problem 45251. Last non-zero digit

Created by: Asif Newaz

1

25

#### Problem 235. Project Euler: Problem 4, Palindromic numbers

Created by: Doug Hull

3

299

#### Problem 1826. Find vampire numbers

Created by: Andrew Newell

9

150

Created by: G K

Tags math

2

51

#### Problem 81. Mandelbrot Numbers

Created by: Cody Team

7

798

#### Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

2

17

#### Problem 45274. Fangs of pseudo-vampire number

Created by: Asif Newaz

1

14

1 – 45 of 45