πProgress in Project-Eulerπ π₯Problem Setπ₯ π001 - Multiples of 3 and 5 π002 - Even Fibonacci numbers π003 - Largest prime factor π004 - Largest palindrome product π005 - Smallest multiple π006 - Sum square difference π007 - 10001st prime π008 - Largest product in a series π009 - Special Pythagorean triplet π010 - Summation of primes π011 - Largest product in a grid π012 - Highly divisible triangular number π013 - Large sum π014 - Longest Collatz sequence π015 - Lattice paths π016 - Power digit sum π017 - Number letter counts π018 - Maximum path sum I π019 - Counting Sundays π020 - Factorial digit sum π023 - Non-abundant sums π067 - Maximum path sum II