Cody

# Problems

1 – 50 of 86
 Problem Title Likes Solvers Difficulty

#### Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

53

4112

#### Problem 64. The Goldbach Conjecture, Part 2

Created by: Cody Team

Tags primes

12

1434

#### Problem 83. Prime factor digits

Created by: Cody Team

15

951

#### Problem 241. Project Euler: Problem 7, Nth prime

Created by: Doug Hull

11

594

Created by: goc3

7

401

#### Problem 659. How long is the longest prime diagonal?

Created by: Ned Gulley

12

349

#### Problem 896. Sophie Germain prime

Created by: Aurelien Queffurust

2

297

Created by: S AY

3

250

#### Problem 1096. Largest Twin Primes

Created by: Des Mc Manus

Tags primes

1

233

#### Problem 43269. Get all prime factors

Created by: Jamil Kasan

6

195

Created by: goc3

2

186

#### Problem 365. Numbers with prime factors 2, 3 and 5.

Created by: elias GR

Tags primes, factors

3

178

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

Created by: James

6

151

#### Problem 248. Twins in a Window

Created by: Ned Gulley

Tags primes

2

129

#### Problem 2411. Largest Prime Number

Created by: Vinod Sudheesh

Tags primes

0

106

#### Problem 2340. Numbers spiral diagonals (Part 1)

Created by: Jean-Marie Sainthillier

2

104

#### Problem 2337. Sum of big primes without primes

Created by: Jean-Marie Sainthillier

1

98

#### Problem 42513. Is it prime?

Created by: Azhar

5

92

#### Problem 3020. Prime Letters = Removing

Created by: Gareth Thomas

Tags primes

0

75

#### Problem 42483. Give prime Numbers upto n

Created by: Manish Kapgate

Tags primes

0

70

#### Problem 2342. Numbers spiral diagonals (Part 2)

Created by: Jean-Marie Sainthillier

2

67

#### Problem 2335. Find the number that has most primes those less than it

Created by: Huy

Tags primes, vector

0

58

#### Problem 1298. P-smooth numbers

Created by: Richard Zapor

Tags primes, find, mod

1

57

#### Problem 44284. Given a number N, find the smallest prime P>N

Created by: AMITAVA BISWAS

Tags primes

1

54

#### Problem 42749. Find the nearest prime

Created by: Pooja Narayan

Tags math, primes

1

53

#### Problem 43085. Primes Checker

Created by: Jamil Kasan

8

51

#### Problem 42704. prime to each other

Created by: George-Felix Leu

Tags primes

1

47

#### Problem 42914. Counting the Grand Primes

Created by: John D'Errico

3

35

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

Created by: yurenchu

3

35

#### Problem 44861. Ratio between sums of prime and non-prime numbers

Created by: Jesús Zambrano

Tags primes, ratio

1

30

#### Problem 43087. Move if I am Optimus Prime

Created by: Jamil Kasan

Tags primes, jokes

7

29

#### Problem 44266. Sort the prime numbers in each row of a matrix

Created by: Loris Chavée

1

28

#### Problem 46624. List the emirps

Created by: ChrisR

2

26

#### Problem 44862. Ratio between sum of primes and sum of factors

Created by: Jesús Zambrano

0

25

#### Problem 44098. Find my secret function I

Created by: Said BOUREZG

Tags primes

2

25

Created by: Ned Gulley

Tags primes

7

25

#### Problem 44099. Find my secret function II

Created by: Said BOUREZG

Tags primes

1

20

#### Problem 46047. Identify Wagstaff primes

Created by: ChrisR

Tags primes

2

20

#### Problem 1761. Primes Faster for Large N

Created by: Richard Zapor

1

18

#### Problem 47798. Check if the input is a balanced prime

Created by: Mehmet OZC

1

16

#### Problem 46054. Count trailing zeros in a primorial

Created by: ChrisR

3

15

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

Created by: ChrisR

0

15

#### Problem 47803. Check if the input is a strong prime

Created by: Mehmet OZC

0

14

#### Problem 47808. Check if the input is an interprime

Created by: Mehmet OZC

0

14

#### Problem 1763. Primes for Large N: 2^30, System Memory Limit

Created by: Richard Zapor

1

13

#### Problem 46848. Modulo of sum of square of first n primes with 24

Created by: Mayank Bajpai

2

13

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

Created by: ChrisR

3

12

#### Problem 50038. Number Puzzles - 014

Created by: Doddy Kastanya

Tags primes, puzzles

1

12

#### Problem 47793. Find the smallest prime with n inside

Created by: ChrisR

2

11

#### Problem 45367. Sieve of Eratosthenes - 02

Created by: Asif Newaz

1

11

1 – 50 of 86