Project Euler and ProjectEuler+ on HackerRank

#	Name	Python	C	Notes
1	Multiples of 3 or 5	✓	✓	¹ ²
2	Even Fibonacci Numbers	✓	✓	¹ ³
3	Largest Prime Factor	✓		¹ ³
4	Largest Palindrome Product	✓	✓	¹ ³
5	Smallest Multiple	✓	✓	¹ ³
6	Sum Square Difference	✓		¹ ³
7	10001st Prime	✓	✓	¹ ³
8	Largest Product in a Series	✓		¹ ³
9	Special Pythagorean Triplet	✓	✓	¹ ³
10	Summation of Primes	✓		¹ ³
11	Largest Product in a Grid	✓		¹ ³
12	Highly Divisible Triangular Number	✓		¹ ³
13	Large Sum	✓		¹ ³
14	Longest Collatz Sequence	✓		¹ ³
15	Lattice Paths	✓		⁴ ³
16	Power Digit Sum	✓		¹ ³
17	Number Letter Counts	✓		⁴ ⁵
18	Maximum Path Sum I	✓		¹ ³
19	Counting Sundays	✓		¹
20	Factorial Digit Sum	✓		¹ ³
67	Maximum Path Sum II	✓		⁶ ³
69	Totient Maximum	✓		⁴ ³
92	Square Digit Chains	✓		⁴ ³
218	Perfect Right-angled Triangles	✗	✗	⁷ ³
317	Firecracker	✓		⁸
457	A Polynomial Modulo the Square of a Prime			⁸
487	Sums of Power Sums			⁸
499	St. Petersburg Lottery	✓		⁸
506	Clock Sequence	✓		⁸
684	Inverse Digit Sum	✓		⁸
719	Number Splitting	✓		⁸
751	Concatenation Coincidence	✓		⁸
822	Square the Smallest	✓		⁸
836	A Bold Proposition	✗	✗	⁷ ⁸
850	Fractions of Powers			⁸
851	SOP and POS			⁸
852	Coins in a Box			⁸
855	Delphi Paper			⁸
857	Beautiful Graphs			⁸
864	Square + 1 = Squarefree			⁸
867	Tiling Dodecagon			⁸
870	Stone Game IV			⁸
876	Triplet Tricks			⁸
879	Touch-screen Password			⁸
880	Nested Radicals			⁸
881	Divisor Graph Width			⁸
882	Removing Bits			⁸
883	Remarkable Triangles			⁸
957	Point Genesis			⁸

Project Euler Problem solved through ProjectEuler+ Challenge code ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸
Previously named "Multiples of 3 and 5": https://projecteuler.chat/viewtopic.php?t=7316. The ProjectEuler+ Challenge still has this name. ↩
Project Euler Problem (Descriptions /) Titles previously did not use title case: https://web.archive.org/web/20230528105433/https://projecteuler.net/archives. This is still reflected in the ProjectEuler+ Challenge name. ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹
Project Euler Problem solved through ProjectEuler+ Challenge code, with adjustment of constant variable(s) ↩ ↩² ↩³ ↩⁴
The ProjectEuler+ Challenge has a different name: "Number to Words" ↩
Project Euler Problem solved through ProjectEuler+ Challenge code, optionally using the file given as part of the problem ↩
No code necessary ↩ ↩²
No corresponding ProjectEuler+ Challenge yet ↩ ↩² ↩³ ↩⁴ ↩⁵ ↩⁶ ↩⁷ ↩⁸ ↩⁹ ↩¹⁰ ↩¹¹ ↩¹² ↩¹³ ↩¹⁴ ↩¹⁵ ↩¹⁶ ↩¹⁷ ↩¹⁸ ↩¹⁹ ↩²⁰ ↩²¹ ↩²² ↩²³ ↩²⁴ ↩²⁵

Harmon758/Project-Euler