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1euler: sum of all number < 1000 which are multiples of 3 or 5
2euler: sum of all even fibinachi numbers, where sequence# is < 4,000,000
3euler: largest prime factor of 600851475143
4euler: Largest palindrome made from a product of 2 3-digit numbers.
5euler: Smallist int divisable by the ints 1-20. (solved by hand by min factors)
6euler: (1 + 2 + 3 + ... + n)^2 - (1^2 + 2^2 + 3^2 + ... + n^2) where n=100.
7euler: what's the 10001st prime?
8euler: Find the biggest product of 5 consecutive digits in a 1kdigit number
9euler: one pathagorean triplet has a+b+c=1000. find a*b*c.
10euler: sum of all primes < 2,000,000 (note: NOT product...)
11euler: Given a grid of nums, find the 4 adjacent nums w/ the highest product.
*12euler: UNSOLVED value of first triangle number with > 500 divisors
13euler: find the sum of the first 10 digits of 100 50-digit numbers
14euler: find start number (<1M) of longest chain (n/2 if even, 3n+1 if odd) ie: 4->2->1
15euler: number of incrementing paths through a 20x20 grid
16euler: sum of the digits of the number 2^1000 (Solved by typing in python interpreter)
*17euler: Number of letters needed to write all numbers in words from 1 to 1000
18euler: find the highest sum path down a triangle.




67euler: same as #18, but far more rows. (heat death of universe if wrong algo)