Cody

Problems

1 – 45 of 45
Problem Title
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Solvers
Difficulty

Problem 45192. check whether a number is a pentatope number

Created by: Asif Newaz

Tags pentatope

1

34

Problem 1012. Determine if input is a perfect number

Created by: Binbin Qi

Tags mod sum, perfect

1

169

Problem 45191. generate nth pentatope number

Created by: Asif Newaz

Tags number, pentatope

3

40

Problem 1407. Is it an Armstrong number?

Created by: Harish Maradana

Tags armstrong no

3

252

Problem 2061. Narcissistic number ?

Created by: Jean-Marie Sainthillier

Tags narcissistic

2

270

Problem 44748. Amicable numbers

Created by: cdeliu

Tags number theory, divisors

1

49

Problem 1008. Determine if input is a Narcissistic number

Created by: Binbin Qi

Tags mod floor

2

145

Problem 896. Sophie Germain prime

Created by: Aurelien Queffurust

Tags prime, primes, sophie germain

3

441

Problem 45253. Pell numbers

Created by: Asif Newaz

Tags number, sequence, pell

2

44

Problem 45223. find nth even fibonacci number

Created by: Asif Newaz

Tags series, number, fibonacci

1

47

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 2690. Armstrong Number

Created by: VIVEK RUHELA

Tags arithmetic, basic matlab

7

271

Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

Tags prime numbers, cody5, safe prime

11

696

Problem 2056. Is this number Munchhausen?

Created by: Ted

Tags math, narcissistic number, munchhausen

2

153

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

Created by: Jan Orwat

Tags number theory, a138591

2

135

Problem 2733. Evil Number

Created by: Jan Orwat

Tags easy, number theory, oeis

3

223

Problem 44836. Iccanobif numbers 1

Created by: James

Tags fibonacci, iccanobif

3

50

Problem 45229. Bell Triangle

Created by: Asif Newaz

Tags number, matrix, Magic Numbers

1

30

Problem 1096. Largest Twin Primes

Created by: Des Mc Manus

Tags primes

2

380

Problem 44360. Pentagonal Numbers

Created by: goc3

Tags series, number, sequence

11

612

Problem 525. Mersenne Primes

Created by: Drew Weymouth

Tags math, prime, integers

4

421

Problem 166. Kaprekar numbers

Created by: the cyclist

Tags kaprekar

4

249

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 45194. Cantor counting

Created by: Asif Newaz

Tags cantor, rational number

2

23

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

Created by: @bmtran (Bryant Tran)

Tags projecteuler, plus15

1

68

Problem 933. Ordinal numbers

Created by: Tim

Tags ordinal, lookup table

1

151

Problem 45249. Frugal number

Created by: Asif Newaz

Tags number, frugal, economical

2

29

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

Created by: James

Tags projecteuler, self-referential, golomb sequence

3

124

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

680

Problem 45251. Last non-zero digit

Created by: Asif Newaz

Tags number, factorial

1

27

Problem 1925. Smith numbers

Created by: Sky Sartorius

Tags sum, factors

4

436

Problem 1477. Champernowne Constant

Created by: G K

Tags math

2

58

Problem 74. Balanced number

Created by: Cody Team

Tags matlab

19

2311

Problem 1825. Find all vampire fangs

Created by: Andrew Newell

Tags factors, number theory

2

51

Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

Tags numbers, number theory, sequence

2

18

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

Created by: James

Tags primes, projecteuler, circular reasoning

7

280

Problem 235. Project Euler: Problem 4, Palindromic numbers

Created by: Doug Hull

Tags projecteuler

4

607

Problem 81. Mandelbrot Numbers

Created by: Cody Team

Tags matlab, fractals

11

1061

Problem 1742. Generate a Parasitic Number

Created by: James

Tags parasitic, cyclic

5

82

Problem 1826. Find vampire numbers

Created by: Andrew Newell

Tags factors, number theory

10

269

Problem 45274. Fangs of pseudo-vampire number

Created by: Asif Newaz

Tags number theory, vampire

1

15
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