Cody

Problems

51 – 91 of 91
 Problem Title Likes Solvers Difficulty

Created by: HH

2

14

Problem 42888. Frobenius McNugget Factorization

Created by: Ned Gulley

14

16

Problem 45342. Sieve of Eratosthenes

Created by: Asif Newaz

2

12

Problem 45424. Amicable pair

Created by: Asif Newaz

2

5

Problem 46099. Identify full reptend primes

Created by: ChrisR

0

9

Problem 2797. modular arithmetic

Created by: rifat

2

37

Problem 2735. Binary Neighbourhood

Created by: Jan Orwat

2

55

Problem 46003. Compute Khinchin's constant

Created by: ChrisR

2

10

Problem 51715. Iterate the sum of divisors and totient

Created by: ChrisR

1

5

Problem 2595. Polite numbers. Politeness.

Created by: Jan Orwat

6

121

Problem 49788. Carmichael Number

Created by: Gifari Zulkarnaen

3

8

Problem 45994. Investigate the frequency of last digits of prime numbers

Created by: ChrisR

2

10

Problem 46087. Investigate the frequency of last non-zero digits of primorials

Created by: ChrisR

0

7

Problem 52679. Easy Sequences 16: Volume of Embedded Octahedron

Created by: Ramon Villamangca

1

3

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

Created by: James

1

11

Problem 2848. Digital Neighbourhood

Created by: Jan Orwat

2

47

Problem 45272. Pseudo-vampire number

Created by: Asif Newaz

2

18

Problem 45831. Compute the Bernoulli numbers

Created by: ChrisR

0

8

Problem 45939. Estimate π from certain values of the zeta function

Created by: ChrisR

0

6

Problem 46066. Evaluate the logarithmic integral

Created by: ChrisR

1

12

Problem 46582. Find jumping medalists

Created by: ChrisR

3

12

Problem 49582. Determine whether a square can be drawn on a grid of dots

Created by: ChrisR

4

6

Problem 51077. List composite numbers that cannot be written as the sum of two primes

Created by: ChrisR

2

7

Problem 51565. Convert a number from base 10 to factorial notation

Created by: ChrisR

2

5

Problem 52609. Easy Sequences 11: Factorial Digits without Trailing Zeros

Created by: Ramon Villamangca

0

3

Problem 52614. Easy Sequences 12: 50th Prime

Created by: Ramon Villamangca

0

3

Problem 52634. Easy Sequences 14: Consecutive Composites

Created by: Ramon Villamangca

0

1

Problem 1825. Find all vampire fangs

Created by: Andrew Newell

2

50

Problem 45997. Evaluate the zeta function for complex arguments

Created by: ChrisR

0

8

Problem 1826. Find vampire numbers

Created by: Andrew Newell

9

248

Problem 42834. Integer complexity (Large numbers)

Created by: Peng Liu

1

10

Problem 45274. Fangs of pseudo-vampire number

Created by: Asif Newaz

1

15

Problem 52709. Easy Sequences 19: Length of Prime-sided Rectangle with Maximum Area

Created by: Ramon Villamangca

Tags easy, geometry, area

1

3

Problem 52659. Easy Sequences 15: Pythagorean Area with maximum Hypotenuse

Created by: Ramon Villamangca

1

3

Problem 52684. Easy Sequences 17: Mu Variant Function

Created by: Ramon Villamangca

0

2

Problem 2160. The 17x17 Problem

Created by: Ned Gulley

1

7

Problem 44788. Find the right number make the equation

Created by: Binbin Qi

2

9

Problem 51580. Construct a continued fraction for a square root

Created by: ChrisR

2

4

Problem 52567. Easy Sequences 7: Easy as Composite Pi

Created by: Ramon Villamangca

0

2

Problem 2737. Prouhet–Tarry–Escott (basic)

Created by: Jan Orwat

0

7

Problem 52724. Easy Sequences 20: Counting Prime-sided Rectangles

Created by: Ramon Villamangca

Tags easy, geometry, area

0

1

51 – 91 of 91