Project Euler

A series of challenging mathematical/computer programming problems

Solved using Python 3.9

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Disclaimer

This repository does not contain solutions, only the source code for the programs to compute the solutions.

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Table of Contents

Table of Contents

1. Multiples of 3 and 5
2. Even Fibonacci numbers
3. Largest prime factor
4. Largest palindrome product
5. Smallest multiple
6. Sum square difference
7. 10001st prime
8. Largest product in a series
9. Special Pythagorean triplet
10. Summation of primes
11. Largest product in a grid
12. Highly divisible triangular number
13. Large sum
14. Longest Collatz sequence
15. Lattice paths
16. Power digit sum
17. Number letter counts
18. Maximum path sum I
19. Counting Sundays
20. Factorial digit sum
21. Amicable numbers
22. Names scores
23. Non-abundant sums
24. Lexicographic permutations
25. 1000-digit Fibonacci number
26. Reciprocal cycles
27. Quadratic primes
28. Number spiral diagonals
29. Distinct powers
30. Digit fifth powers
31. Coin sums
32. Pandigital products
33. Digit cancelling fractions
34. Digit factorials
35. Circular primes
36. Double-base palindromes
37. Truncatable primes
38. Pandigital multiples
39. Integer right triangles
40. Champernowne's constant
41. Pandigital prime
42. Coded triangle numbers
43. Sub-string divisibility
44. Pentagon numbers
45. Triangular, pentagonal, and hexagonal
46. Goldbach's other conjecture
47. Goldbach's other conjecture
48. Distinct prime factors
49. Self powers
50. Prime permutations
51. Consecutive prime sum
52. Prime digit replacements
53. Permuted multiples
54. Combinatoric selections
55. Poker hands
56. Lychrel numbers
57. Powerful digit sum
58. Square root convergents
59. Spiral primes
60. XOR decryption
61. Prime pair sets
62. Cyclical figurate numbers
63. Cubic permutations
64. Powerful digit counts

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Author

Red Nur