Cody

# Problems

1 – 50 of 59
 Problem Title Likes Solvers

#### Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

47

4744

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

Created by: Cody Team

Tags primes

12

1383

#### Problem 83. Prime factor digits

Created by: Cody Team

12

869

Created by: goc3

3

514

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

Created by: Doug Hull

5

495

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

Created by: Ned Gulley

9

440

#### Problem 896. Sophie Germain prime

Created by: Aurelien Queffurust

1

270

Created by: S AY

1

233

#### Problem 1096. Largest Twin Primes

Created by: Des Mc Manus

Tags primes

0

229

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

Created by: elias GR

Tags primes, factors

2

171

#### Problem 248. Twins in a Window

Created by: Ned Gulley

Tags primes

1

163

Created by: goc3

1

157

#### Problem 43269. Get all prime factors

Created by: Jamil Kasan

5

150

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

Created by: James

4

139

#### Problem 2411. Largest Prime Number

Created by: Vinod Sudheesh

Tags primes

0

108

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

Created by: Jean-Marie Sainthillier

2

101

#### Problem 42513. Is it prime?

Created by: Azhar

4

84

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

Created by: Jean-Marie Sainthillier

1

80

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

Created by: AMITAVA BISWAS

Tags primes

1

75

#### Problem 3020. Prime Letters = Removing

Created by: Gareth Thomas

Tags primes

0

73

#### 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

1

60

#### Problem 43015. Number of primes

Created by: Abhishek Jain

8

59

#### Problem 42749. Find the nearest prime

Created by: Pooja Narayan

Tags math, primes

0

58

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

Created by: Huy

Tags primes, vector

0

54

#### Problem 1298. P-smooth numbers

Created by: Richard Zapor

Tags primes, find, mod

0

53

#### Problem 43085. Primes Checker

Created by: Jamil Kasan

8

47

#### Problem 42704. prime to each other

Created by: George-Felix Leu

Tags primes

1

43

#### Problem 42914. Counting the Grand Primes

Created by: John D'Errico

3

40

Created by: Ned Gulley

Tags primes

5

39

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

Created by: Jamil Kasan

Tags primes, jokes

6

32

#### Problem 44266. Sort the prime numbers in each row of a 3x3 matrix

Created by: Loris Chavée

1

30

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

Created by: yurenchu

2

28

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

Created by: Said BOUREZG

Tags primes

1

26

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

Created by: Richard Zapor

1

23

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

Created by: Said BOUREZG

Tags primes

1

20

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

Created by: Jesús Zambrano

Tags primes, ratio

1

18

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

Created by: Jesús Zambrano

0

16

#### Problem 1697. Make a Pandiagonal Prime Magic Square: 11 x 11

Created by: Richard Zapor

1

13

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

Created by: Asif Newaz

1

10

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

Created by: Richard Zapor

1

8

#### Problem 46047. Identify Wagstaff primes

Created by: ChrisR

Tags primes

0

8

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

Created by: ChrisR

1

6

#### Problem 45429. Prime Sum

Created by: Asif Newaz

0

5

#### Problem 44849. Given a base n, find the y values less or equal than 100(without 1), such that they will never produce a periodic number if we divide any whole number between some of them

Created by: Fabio Squizzato

1

5

#### Problem 46050. Construct a prime circle

Created by: ChrisR

Tags primes

3

5

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

Created by: ChrisR

2

5

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

Created by: ChrisR

0

4

#### Problem 1688. Prime Sequences: AP-k Minimum Final Value

Created by: Richard Zapor

0

4

#### Problem 46057. Find the last non-zero digit in a primorial

Created by: ChrisR

0

4

1 – 50 of 59