Cody

Trial software

Problems

1 – 34 of 34

Problem Title Likes Solvers

Write c^3 as sum of two squares a^2+b^2

Created by: Mehmet OZC

Tags number theory, cody5

0

225

Find nth maximum

Created by: Awadhesh Srivastava

Tags number theory, n th max

1

168

Evil Number

Created by: Jan Orwat

Tags pop series, number theory, easy

2

161

Polite numbers. N-th polite number.

Created by: Jan Orwat

Tags a138591, number theory

2

103

N-th Odious

Created by: Jan Orwat

Tags pop series, number theory, oeis

1

102

Polite numbers. Politeness.

Created by: Jan Orwat

Tags number theory, oeis

5

92

Find the sum of n squares

Created by: William Mitchell

Tags number theory

1

90

Polygonal numbers

Created by: Jan Orwat

Tags polygonal, sequence, number theory

3

84

Find vampire numbers

Created by: Andrew Newell

Tags number theory, factors

5

81

Nth root

Created by: Abhishek Jain

Tags root, nth, numbers

2

52

Calculate Euler's phi function

Created by: Freddy

Tags basic matlab, factors, number theory

0

45

Find two triangular numbers whose sum is input.

Created by: Mehmet OZC

Tags number theory, triangular numbers

1

41

Fangs of a vampire number

Created by: Andrew Newell

Tags number theory, factors

3

37

Reverse digits of a number

Created by: Mohammad Haghighat

Tags math, basic matlab, numbers

2

36

Sideways sum

Created by: Jan Orwat

Tags pop series, easy, number theory

0

30

Find all vampire fangs

Created by: Andrew Newell

Tags number theory, factors

1

26

Binary Neighbourhood

Created by: Jan Orwat

Tags pop series, number theory

0

24

Fermat's last theorem - again

Created by: rifat

Tags number theory

0

21

Digital Neighbourhood

Created by: Jan Orwat

Tags pop series, number theory

1

21

How brilliant are you?

Created by: James

Tags brilliant, number theory, factors

3

20

Tribute to Ramanujan

Created by: rifat

Tags number theory

1

15

The number of trailing zero digit of a factorial

Created by: Jihye Sofia Seo

Tags factorial, integer, number theory

0

14

modular arithmetic

Created by: rifat

Tags number theory

0

14

I'm going to enjoy watching you calculate, Mr Anderson

Created by: James

Tags phone numbers, number theory, agent smith

1

14

Frobenius McNugget Factorization

Created by: Ned Gulley

Tags number theory, factorization

3

12

Number of even divisors of a given number

Created by: Jihye Sofia Seo

Tags divisor, factorisation, factor

0

11

Amicable numbers

Created by: cdeliu

Tags divisors, number theory

1

11

Integer complexity

Created by: HH

Tags integer, numbers, number theory

0

9

Should Mr McNugget even get out of bed today?

Created by: James

Tags no nuggets for you!, number theory, factorization

0

9

Red and green towers

Created by: Giovanni Mottola

Tags number theory, arithmetic

0

8

The 17x17 Problem

Created by: Ned Gulley

Tags 17x17, number theory

2

7

Prouhet–Tarry–Escott (basic)

Created by: Jan Orwat

Tags set, number theory, Magic Numbers

0

6

Integer complexity (Large numbers)

Created by: Peng Liu

Tags number theory, integer, complexity

0

6

Find the right number make the equation

Created by: Binbin Qi

Tags positive number, number theory, Diophantine equations

0

4

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Trial software