# Problems

1 – 25 of 25
 Problem Title Likes Solvers Difficulty

#### Problem 42754. Odd elimination

Created by: Zikobrelli

1

57

#### Problem 2721. Pandigital Factors (Based on Euler 491)

Created by: James

2

34

#### Problem 1106. I've got the power! (Inspired by Project Euler problem 29)

Created by: James

2

105

#### Problem 1084. Square Digits Number Chain Terminal Value (Inspired by Project Euler Problem 92)

Created by: @bmtran (Bryant Tran)

1

210

#### Problem 250. Project Euler: Problem 10, Sum of Primes

Created by: Doug Hull

8

1499

#### Problem 240. Project Euler: Problem 6, Natural numbers, squares and sums.

Created by: Doug Hull

12

1893

#### Problem 42913. Pseudo Square Root (Inspired by Project Euler 266)

Created by: James

1

46

#### Problem 42394. It's going down. We're finding simbers!

Created by: James

3

68

#### Problem 230. Project Euler: Problem 1, Multiples of 3 and 5

Created by: Doug Hull

41

2765

#### Problem 2664. Divisors for big integer

Created by: Jean-Marie Sainthillier

2

124

#### Problem 1082. Lychrel Number Test (Inspired by Project Euler Problem 55)

Created by: @bmtran (Bryant Tran)

1

88

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

Created by: Doug Hull

17

1301

#### Problem 42935. Sums of cubes and squares of sums

Created by: John D'Errico

9

220

#### Problem 1190. Golomb's self-describing sequence (based on Euler 341)

Created by: James

3

145

Created by: goc3

1

95

#### Problem 239. Project Euler: Problem 5, Smallest multiple

Created by: Doug Hull

9

1167

#### Problem 232. Project Euler: Problem 2, Sum of even Fibonacci

Created by: Cody Team

29

1929

#### Problem 42938. Project Euler: Problem 18, Maximum path sum I

Created by: Riam Su

4

86

#### Problem 2606. Decrypt the cypher using XOR encryption (for beginners)

Created by: Jean-Marie Sainthillier

2

39

#### Problem 249. Project Euler: Problem 9, Pythagorean numbers

Created by: Doug Hull

10

997

#### Problem 234. Project Euler: Problem 3, Largest prime factor

Created by: Doug Hull

11

1236

#### Problem 246. Project Euler: Problem 8, Find largest product in a large string of numbers

Created by: Doug Hull

6

982

#### Problem 42936. Project Euler: Problem 11, Largest product in a grid

Created by: Riam Su

4

79

#### Problem 235. Project Euler: Problem 4, Palindromic numbers

Created by: Doug Hull

10

913

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

Created by: James

8

437

1 – 25 of 25