Project Euler

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Problems 1-99

Project Euler/1 - Multiples of 3 and 5 - printing out all multiples of 3 and 5.

Project Euler/2 - EvenFibonacci - summing the Fibonacci numbers that are even and less than 4 million

Project Euler/3 - Largestrime Factor - Largest prime factor of a given 12-digit number

Project Euler/4 - Largestalindrome Product - Largest palindrome product (extracting substrings and sorting)

Project Euler/5 - LCM - Least common multiple of all the integers from 1 to 20

Project Euler/6 - SoS - Sum of squares and squares of sums

Project Euler/7 - Tenhousand Primes - Find the 10,001st prime.

Project Euler/8 - Adjacentigits - Largest product formed by 13 adjacent digits.

Project Euler/9 - Pythagoreanriplet Sum - Finding a Pythagorean triplet with a specified sum.

Project Euler/10 Sum of Primes - Sum of all primes below 2 million.

Project Euler/11 Greatest Product in Grid - Finding the greatest product of 4 numbers on a grid.

Project Euler/12 Highly Factorable Triangular Numbers - Finding highly factorable triangular numbers

Project Euler/13 Sum of Big Numbers - Work out the first 10 digits of a sum of 100 50-digit numbers

Project Euler/14 Longest Collatz Sequence - Finding the longest Collatz sequence for starting integers under 1 million

Project Euler/15 Lattice Paths - Finding the number of variations on a route through a lattice.

Project Euler/16 Summing the Digits - summing up the digits of a large power of 2, 2**1000

Project Euler/17 Number Spelling - spelling out all the numbers from one to a thousand



Project Euler/51 Prime Replacement - Finding the number of primes that can be formed by replacing particular digits of a number

Project Euler/52 Permuted Multiples - Find a number whose multiples 2x, 3x, 4x, 5x ad 6x are permutations of one another.

Project Euler/53 Number of Combinations Over 1M - Find how many different n choose r values are greater than 1 million for n between 1 and 100.


Problems 500-599

Project Euler/500 Smmallest Number with 2n Factors - Finding the smallest number with 2^n divisors




Euler.jpg
Project Euler
project euler notes

Project Euler

Grid 0: Problems 1-99

Problem 1  · Problem 2  · Problem 3  · Problem 4  · Problem 5  · Problem 6  · Problem 7  · Problem 8  · Problem 9  · Problem 10

Problem 11  · Problem 12  · Problem 13  · Problem 14  · Problem 15  · Problem 16  · Problem 17  · Problem 18  · Problem 19  · Problem 20

Problem 27  · Problem 28  · Problem 29  · Problem 30

Problem 31  · Problem 32  · Problem 33  · Problem 40

Problem 41  · Problem 42  · Problem 43  · Problem 44  · Problem 45  · Problem 46  · Problem 47  · Problem 48  · Problem 49  · Problem 50

Problem 51  · Problem 52  · Problem 53  · Problem 54  · Problem 55  · Problem 56  · Problem 57  · Problem 58  · Problem 59  · Problem 60

Problem 61  · Problem 62  · Problem 63  · Problem 64  · Problem 65  · Problem 66  · Problem 67  · Problem 68  · Problem 69  · Problem 70

Grid 1: Problems 100-199

...

Problem 110  · Problem 111  · Problem 112  · Problem 113  · Problem 114  · Problem 115  · Problem 116  · Problem 117  · Problem 118  · Problem 119

Problem 150  · Problem 151  · Problem 152  · Problem 153  · Problem 154  · Problem 155  · Problem 156  · Problem 157  · Problem 158  · Problem 159

...

Problem 170  · Problem 171  · Problem 172  · Problem 173  · Problem 174  · Problem 175  · Problem 176  · Problem 177  · Problem 178  · Problem 179

...


Problem 190  · Problem 191  · Problem 192  · Problem 193  · Problem 194  · Problem 195  · Problem 196  · Problem 197  · Problem 198  · Problem 199


Grid 2: Problems 200-299

Problem 227  · Problem 254


Grid 3: Problems 300-399


Problem 301  · Problem 310

Problem 312  · Problem 319

Problem 323  · Problem 328

Problem 334  · Problem 337

Problem 345  · Problem 346

Problem 355  · Problem 356

Problem 364  · Problem 367

Problem 373  · Problem 378

Problem 382  · Problem 389

Problem 391

Grid 4: Problems 400-499

Problem 400


Grid 5: Problems 500-599

Problem 500  · Problem 501  · Problem 502


Grid 9: Problems 900-999

Problem 932


* = in progress

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