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Solutions for Project-Euler problems. It will be updated every day. Pop into the solutions.txt file if you want direct solutions.

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Project-Euler-Solution-Library

Solution Repo for Project-Euler problems. It will be updated soon.

Project Euler was started by Colin Hughes (a.k.a. euler) in October 2001 as a sub-section on mathschallenge . Who could have known how popular these types of problems would turn out to be? Since then the membership has continued to grow and Project Euler moved to its own domain in 2006. Ideas for new problems come from our own members and they are developed by a team of hard working and talented mathematicians and programmers. So to put it simply, it is the members that run Project Euler.
"It does not matter how slowly you go as long as you do not stop." - Leonhard Euler

Problems

Index Title Solution Link
1 Multiples of 3 and 5 233168 C++
2 Even Fibonacci numbers 4613732 C++
3 Largest prime factor 6857 C++
4 Largest palindrome product 906609 C++
5 Smallest multiple 232792560 C++
6 Sum square difference 25164150 C++
7 10001st prime 104743 C++
8 Largest product in a series 23514624000 C++
9 Special Pythagorean triplet 31875000 C++
10 Summation of primes 142913828922 C++
11 Largest product in a grid 70600674 C++
12 Highly divisible triangular number 76576500 C++
13 Large sum 5537376230 C++
14 Longest Collatz sequence 837799 C++
15 Lattice paths 137846528820 C++
16 Power digit sum C++
17 Number letter counts C++
18 Maximum path sum I C++
19 Counting Sundays C++
20 Factorial digit sum C++
21 Amicable numbers C++
22 Names scores C++
23 Non-abundant sums C++
24 Lexicographic permutations C++
25 1000-digit Fibonacci number C++
26 Reciprocal cycles C++
27 Quadratic primes C++
28 Number spiral diagonals C++
29 Distinct powers C++
30 Digit fifth powers C++
31 Coin sums C++
32 Pandigital products C++
33 Digit cancelling fractions C++
34 Digit factorials C++
35 Circular primes C++
36 Double-base palindromes C++
37 Truncatable primes C++
38 Pandigital multiples C++
39 Integer right triangles C++
40 Champernowne's constant C++
41 Pandigital prime C++
42 Coded triangle numbers C++
43 Sub-string divisibility C++
44 Pentagon numbers C++
45 Triangular, pentagonal, and hexagonal C++
46 Goldbach's other conjecture C++
47 Distinct primes factors C++
48 Self powers C++
49 Prime permutations C++
50 Consecutive prime sum C++
51 Prime digit replacements C++
52 Permuted multiples C++
53 Combinatoric selections C++
54 Poker hands C++
55 Lychrel numbers C++
56 Powerful digit sum C++
57 Square root convergents C++
58 Spiral primes C++
59 XOR decryption C++
60 Prime pair sets C++
61 Cyclical figurate numbers C++
62 Cubic permutations C++
63 Powerful digit counts C++
64 Odd period square roots C++
65 Convergents of e C++
66 Diophantine equation C++
67 Maximum path sum II C++
68 Magic 5-gon ring C++
69 Totient maximum C++
70 Totient permutation C++
71 Ordered fractions C++
72 Counting fractions C++
73 Counting fractions in a range C++
74 Digit factorial chains C++
75 Singular integer right triangles C++
76 Counting summations C++
77 Prime summations C++
78 Coin partitions C++
79 Passcode derivation C++
80 Square root digital expansion C++
81 Path sum two ways C++
82 Path sum: three ways C++
83 Path sum: four ways C++
84 Monopoly odds C++
85 Counting rectangles C++
86 Cuboid route C++
87 Prime power triples C++
88 Product-sum numbers C++
89 Roman numerals C++
90 Cube digit pairs C++
91 Right triangles with integer coordinates C++
92 Square digit chains C++
93 Arithmetic expressions C++
94 Almost equilateral triangles C++
95 Amicable chains C++
96 Su Doku C++
97 Large non-Mersenne prime C++
98 Anagramic squares C++
99 Largest exponential C++
100 Arranged probability C++
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Solutions for Project-Euler problems. It will be updated every day. Pop into the solutions.txt file if you want direct solutions.

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