Code for the Project Euler challenges I have solved
| ID | Description / Title | Solved |
|---|---|---|
| 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 | Distinct primes factors | |
| 48 | Self powers | |
| 49 | Prime permutations | |
| 50 | Consecutive prime sum | |
| 51 | Prime digit replacements | |
| 52 | Permuted multiples | |
| 53 | Combinatoric selections | |
| 54 | Poker hands | |
| 55 | Lychrel numbers | |
| 56 | Powerful digit sum | |
| 57 | Square root convergents | |
| 58 | Spiral primes | |
| 59 | XOR decryption | ✅ |
| 60 | Prime pair sets | |
| 61 | Cyclical figurate numbers | |
| 62 | Cubic permutations | |
| 63 | Powerful digit counts | |
| 64 | Odd period square roots | |
| 65 | Convergents of e | |
| 66 | Diophantine equation | |
| 67 | Maximum path sum II | |
| 68 | Magic 5-gon ring | |
| 69 | Totient maximum | |
| 70 | Totient permutation | |
| 71 | Ordered fractions | |
| 72 | Counting fractions | |
| 73 | Counting fractions in a range | |
| 74 | Digit factorial chains | |
| 75 | Singular integer right triangles |