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Problem 235. Project Euler: Problem 4, Palindromic numbers

Created by: Doug Hull

Tags projecteuler

1

Solution

63

Size

1

Solution

63

Size

Problem 239. Project Euler: Problem 5, Smallest multiple

Created by: Doug Hull

Tags projecteuler

1

Solution

91

Size

1

Solution

91

Size

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

Created by: Doug Hull

Tags projecteuler

1

Solution

54

Size

1

Solution

54

Size

Problem 249. Project Euler: Problem 9, Pythagorean numbers

Created by: Doug Hull

Tags projecteuler

1

Solution

54

Size

1

Solution

54

Size

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

Created by: Doug Hull

Tags projecteuler

2

Solutions

34

Size

2

Solutions

34

Size

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

Created by: Doug Hull

Tags projecteuler, basic matlab

1

Solution

14

Size

1

Solution

14

Size

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

Created by: Doug Hull

Tags projecteuler

5

Solutions

44

Size

5

Solutions

44

Size

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

Created by: Doug Hull

Tags projecteuler

1

Solution

39

Size

1

Solution

39

Size

Problem 1925. Smith numbers

Created by: Sky Sartorius

Tags sum, factors

1

Solution

73

Size

1

Solution

73

Size

Problem 2910. Mersenne Primes vs. All Primes

Created by: goc3

Tags primes, comparison, powers

1

Solution

95

Size

1

Solution

95

Size

Problem 525. Mersenne Primes

Created by: Drew Weymouth

Tags math, prime, integers

5

Solutions

64

Size

5

Solutions

64

Size

Problem 1722. Find the next prime number

Created by: Chris E.

Tags prime

2

Solutions

47

Size

2

Solutions

47

Size

Problem 896. Sophie Germain prime

Created by: Aurelien Queffurust

Tags prime, primes, sophie germain

2

Solutions

30

Size

2

Solutions

30

Size

Problem 1567. Make a vector of prime numbers

Created by: Marek Kuklis

Tags matlab

1

Solution

47

Size

1

Solution

47

Size

Problem 1096. Largest Twin Primes

Created by: Des Mc Manus

Tags primes

1

Solution

44

Size

1

Solution

44

Size

Problem 981. Find nearest prime number less than input number

Created by: Reza Ahmadzadeh

Tags math, prime numbers

1

Solution

37

Size

1

Solution

37

Size

Problem 60. The Goldbach Conjecture

Created by: Cody Team

Tags primes

1

Solution

51

Size

1

Solution

51

Size

Problem 241. Project Euler: Problem 7, Nth prime

Created by: Doug Hull

Tags primes, projecteuler

5

Solutions

36

Size

5

Solutions

36

Size

Problem 191. Proper Factors

Created by: @bmtran (Bryant Tran)

Tags proper factors

1

Solution

43

Size

1

Solution

43

Size

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

Created by: elias GR

Tags primes, factors

3

Solutions

97

Size

3

Solutions

97

Size

Problem 752. Is X a Fibonacci Matrix?

Created by: Sean de Wolski

Tags fibonacci, Tic...Toc...

1

Solution

49

Size

1

Solution

49

Size

Problem 1066. Multiples of a Number in a Given Range

Created by: @bmtran (Bryant Tran)

Tags factor, plus15, colon

4

Solutions

37

Size

4

Solutions

37

Size

Problem 43269. Get all prime factors

Created by: Jamil Kasan

Tags primes, factorization

1

Solution

30

Size

1

Solution

30

Size

Problem 148. Factorize THIS, buddy

Created by: the cyclist

Tags easy prime, basic matlab

1

Solution

32

Size

1

Solution

32

Size

Problem 44311. Number of Even Elements in Fibonacci Sequence

Created by: Mehmet OZC

Tags fibonacci, cody5, big number

6

Solutions

14

Size

6

Solutions

14

Size

Problem 83. Prime factor digits

Created by: Cody Team

Tags primes

2

Solutions

72

Size

2

Solutions

72

Size

Problem 42340. Fibonacci Decomposition

Created by: Ned Gulley

Tags fibonacci

1

Solution

110

Size

1

Solution

110

Size

Problem 44481. How many Fibonacci numbers?

Created by: Bob Tivnan

Tags integers, fibonacci, #easy

1

Solution

61

Size

1

Solution

61

Size

Problem 1946. Fibonacci-Sum of Squares

Created by: Chris Cleveland

Tags fibonacci, sum of squares

1

Solution

54

Size

1

Solution

54

Size

Problem 392. Clock Hand Angle 1

Created by: @bmtran (Bryant Tran)

Tags math, clocks, fractions

2

Solutions

90

Size

2

Solutions

90

Size

Problem 1103. Right Triangle Side Lengths (Inspired by Project Euler Problem 39)

Created by: @bmtran (Bryant Tran)

Tags projecteuler, plus15

1

Solution

68

Size

1

Solution

68

Size

Problem 637. Volume of a Parallelepiped

Created by: Richard Zapor

Tags vector operators dot cross

1

Solution

12

Size

1

Solution

12

Size

Problem 554. Is the Point in a Circle?

Created by: Kuifeng

Tags circle, poor_test_suite, poor_problem_statement

6

Solutions

105

Size

6

Solutions

105

Size

Problem 336. Similar Triangles - find the height of the tree

Created by: Bruce Raine

Tags multiplication, arithmetic, geometry

2

Solutions

31

Size

2

Solutions

31

Size

Problem 194. Clockwise or Counterclockwise

Created by: Alfonso Nieto-Castanon

Tags math, polygon

1

Solution

60

Size

1

Solution

60

Size

Problem 193. Smallest distance between a point and a rectangle

Created by: Alfonso Nieto-Castanon

Tags math, distance

2

Solutions

40

Size

2

Solutions

40

Size

Problem 330. Circumscribed circles

Created by: Alan Chalker

Tags geometry

1

Solution

70

Size

1

Solution

70

Size

Problem 198. Are you in or are you out?

Created by: the cyclist

Tags polygon, basics, poor_test_suite

2

Solutions

26

Size

2

Solutions

26

Size

Problem 164. Right and wrong

Created by: the cyclist

Tags triangle

1

Solution

32

Size

1

Solution

32

Size

Problem 190. Great Circle Distance

Created by: @bmtran (Bryant Tran)

Tags distance, great circle, azimuth

1

Solution

70

Size

1

Solution

70

Size

Problem 833. Find third Side of a right triangle given hypotenuse and a side. No * - or other functions allowed

Created by: Richard Zapor

Tags right-angled triangles, non standard methods, right-angle triangles

3

Solutions

41

Size

3

Solutions

41

Size

Problem 381. Angle between two vectors

Created by: Aurelien Queffurust

Tags vectors, geometry, angle

9

Solutions

33

Size

9

Solutions

33

Size

Problem 635. Angle between Two Vectors

Created by: Richard Zapor

Tags vectors, geometry, vector calculus

1

Solution

45

Size

1

Solution

45

Size

Problem 636. Spherical radius given four points

Created by: Richard Zapor

Tags geometry linear algebra, non-linear

1

Solution

156

Size

1

Solution

156

Size

Problem 768. Are all the three given point in the same line?

Created by: Reza Ahmadzadeh

Tags geometry, algebra

2

Solutions

53

Size

2

Solutions

53

Size

Problem 1072. Television Screen Dimensions

Created by: @bmtran (Bryant Tran)

Tags plus15, aspect ratio, television

1

Solution

41

Size

1

Solution

41

Size

Problem 417. Covering area

Created by: Nikolai

Tags area, triangulation, geometrics

1

Solution

73

Size

1

Solution

73

Size

Problem 43029. Area of polygon

Created by: Massimo Zanetti

Tags area, polygons, basics

1

Solution

79

Size

1

Solution

79

Size

Problem 769. Calculate the area of a triangle between three points

Created by: Reza Ahmadzadeh

Tags math, triangle

1

Solution

52

Size

1

Solution

52

Size

Problem 450. What is the distance from point P(x,y) to the line Ax + By + C = 0?

Created by: Bruce Raine

Tags distance, pythagoras, orthogonal

1

Solution

34

Size

1

Solution

34

Size

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