User:ProjectEuler

This article is a stub, which means that it is not detailed enough and needs to be expanded. Please help us by adding some more information.

Project Euler stores a set of mathematical or computational problems that may be easy or hard. There are currently over 28 problems from Project Euler.

Problems overview

1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25
26	27	28	29	30	31	32	33	34	35	36	37	38	39	40	41	42	43	44	45	46	47	48	49	50

List of problems

ID	title	keywords
1	Multiples of 3 and 5	FizzBuzz
2	Even Fibonacci numbers	Fibonacci
3	Largest prime factor	Factorization, big constant
4	Largest palindrome product	Palindrome[citation needed]
5	Smallest multiple
6	Sum square difference
7	10001st prime
8	Largest product in a series	searching
9	Special Pythagorean triplet	Pythagorean triplet
10	Summation of primes
11	Largest product in a grid
12	Highly divisible	Factorization
13	Large sum
14	Longest Collatz sequence
15	Lattice paths	Pascal's triangle
16	Power digit sum	digit sum
17	Number letter counts	English
18	Maximum path sum I	dynamic programming
19	Counting Sundays	calendar
20	Factorial digit sum	digit sum
21	Amicable numbers
22	Names scores	sorting
23	Non-abundant sums
24	Lexicographic permutations
25	1000-digit Fibonacci number	Fibonacci
26	Reciprocal cycles	Fermat pseudo-prime[citation needed]
27	Quadratic primes	negative output
28	Number spiral diagonals	number spiral

External resources

• Project Euler official website (not available)