Cody

# Problems

1 – 50 of 63
 Problem Title Likes Solvers

3

291

#### Problem 44319. Write c^3 as sum of two squares a^2+b^2

Created by: Mehmet OZC

2

272

#### Problem 2733. Evil Number

Created by: Jan Orwat

2

196

#### Problem 1826. Find vampire numbers

Created by: Andrew Newell

9

139

#### Problem 2734. N-th Odious

Created by: Jan Orwat

1

131

#### Problem 42865. Find the sum of n squares

Created by: William Mitchell

2

123

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

Created by: Jan Orwat

2

122

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

Created by: Jan Orwat

6

112

#### Problem 1771. Polygonal numbers

Created by: Jan Orwat

4

98

#### Problem 44289. Find two triangular numbers whose sum is input.

Created by: Mehmet OZC

1

61

#### Problem 43130. Nth root

Created by: Abhishek Jain

2

69

#### Problem 656. Calculate Euler's phi function

Created by: Freddy

1

63

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

Created by: Andrew Newell

4

57

2

45

#### Problem 1825. Find all vampire fangs

Created by: Andrew Newell

2

41

#### Problem 2738. Sideways sum

Created by: Jan Orwat

1

39

#### Problem 2735. Binary Neighbourhood

Created by: Jan Orwat

1

38

#### Problem 42888. Frobenius McNugget Factorization

Created by: Ned Gulley

14

14

#### Problem 44068. The number of trailing zero digit of a factorial

Created by: Jihye Sofia Seo

2

36

#### Problem 2848. Digital Neighbourhood

Created by: Jan Orwat

2

34

#### Problem 2370. Fermat's last theorem - again

Created by: rifat

1

25

#### Problem 2797. modular arithmetic

Created by: rifat

2

28

#### Problem 44229. How brilliant are you?

Created by: James

3

28

#### Problem 44748. Amicable numbers

Created by: cdeliu

1

26

#### Problem 45189. Double Factorial

Created by: Mehmet OZC

2

26

#### Problem 46287. find the answer

Created by: Maryam HCTRAK Alhebsi

0

24

#### Problem 46305. find the value

Created by: Maryam HCTRAK Alhebsi

0

23

#### Problem 44065. Number of even divisors of a given number

Created by: Jihye Sofia Seo

2

22

#### Problem 44230. I'm going to enjoy watching you calculate, Mr Anderson

Created by: James

1

21

#### Problem 2369. Tribute to Ramanujan

Created by: rifat

1

18

#### Problem 43179. Red and green towers

Created by: Giovanni Mottola

1

11

#### Problem 46000. Compute the harmonic numbers

Created by: ChrisR

4

15

#### Problem 45224. Wythoff Sequence

Created by: Asif Newaz

1

12

#### Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

2

12

#### Problem 42889. Should Mr McNugget even get out of bed today?

Created by: James

1

10

Created by: HH

2

11

#### Problem 46639. Transform a Decimal number into a Septimal number

Created by: Syd Shahed

1

13

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

Created by: Asif Newaz

1

11

#### Problem 42834. Integer complexity (Large numbers)

Created by: Peng Liu

1

8

#### Problem 45388. Gapful numbers

Created by: Asif Newaz

1

9

#### Problem 45342. Sieve of Eratosthenes

Created by: Asif Newaz

1

7

#### Problem 46046. Determine whether a number is a cluster prime

Created by: ChrisR

1

7

#### Problem 2160. The 17x17 Problem

Created by: Ned Gulley

1

6

#### Problem 2737. Prouhet–Tarry–Escott (basic)

Created by: Jan Orwat

0

6

#### Problem 44788. Find the right number make the equation

Created by: Binbin Qi

2

5

#### Problem 45831. Compute the Bernoulli numbers

Created by: ChrisR

0

6

#### Problem 45960. Set the Euler-Mascheroni constant with an identity using available MATLAB functions

Created by: ChrisR

0

5

#### Problem 45988. Evaluate the zeta function for real arguments > 1

Created by: ChrisR

1

4

#### Problem 46003. Compute Khinchin's constant

Created by: ChrisR

2

5

#### Problem 45964. Compute the nth Pythagorean prime

Created by: ChrisR

0

5

1 – 50 of 63