Cody

Problems

1 – 20 of 20
Problem Title
Likes
Solvers
Difficulty

Problem 2736. Pernicious Anniversary Problem

Created by: Jan Orwat

Tags easy, sequences, oeis

12

794

Problem 248. Twins in a Window

Created by: Ned Gulley

Tags primes

2

145

Problem 44384. Find the nearest prime number

Created by: Matthew Eicholtz

Tags prime numbers, cody5

7

620

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

Created by: James

Tags number theory, phone numbers, agent smith

2

40

Problem 44385. Extra safe primes

Created by: Matthew Eicholtz

Tags prime numbers, cody5, safe prime

11

723

Problem 3016. Twin Primes

Created by: goc3

Tags prime, integer, sequence

1

76

Problem 896. Sophie Germain prime

Created by: Aurelien Queffurust

Tags prime, primes, sophie germain

3

636

Problem 2337. Sum of big primes without primes

Created by: Jean-Marie Sainthillier

Tags primes, project euler, eratosthenes

3

133

Problem 1204. Prime Time

Created by: James

Tags prime time, specific

2

61

Problem 44403. Goldbach's marginal conjecture - Write integer as sum of three primes

Created by: yurenchu

Tags primes, goldbach conjecture

3

57

Problem 2910. Mersenne Primes vs. All Primes

Created by: goc3

Tags primes, comparison, powers

5

527

Problem 2595. Polite numbers. Politeness.

Created by: Jan Orwat

Tags number theory, oeis

7

160

Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

57

5214

Problem 64. The Goldbach Conjecture, Part 2

Created by: Cody Team

Tags primes

16

2114

Problem 83. Prime factor digits

Created by: Cody Team

Tags primes

22

1988

Problem 1672. Leftovers? Again?!

Created by: James

Tags leftovers, modulo

4

26

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

Created by: James

Tags primes, projecteuler, circular reasoning

8

436

Problem 2342. Numbers spiral diagonals (Part 2)

Created by: Jean-Marie Sainthillier

Tags primes, project euler, spiral

2

123

Problem 1394. Prime Ladders

Created by: Ned Gulley

Tags primes

8

40

Problem 44377. Five steps to enlightenment

Created by: Alfonso Nieto-Castanon

Tags indexing, logic, cody5

6

39
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