{ "name": "Project Euler Problems 101 to 200", "isUpcomingChange": false, "dashedName": "project-euler-problems-101-to-200", "helpCategory": "Euler", "disableLoopProtectTests": true, "disableLoopProtectPreview": true, "challengeOrder": [ { "id": "5900f3d21000cf542c50fee4", "title": "Problem 101: Optimum polynomial" }, { "id": "5900f3d21000cf542c50fee5", "title": "Problem 102: Triangle containment" }, { "id": "5900f3d61000cf542c50fee7", "title": "Problem 103: Special subset sums: optimum" }, { "id": "5900f3d51000cf542c50fee6", "title": "Problem 104: Pandigital Fibonacci ends" }, { "id": "5900f3d61000cf542c50fee8", "title": "Problem 105: Special subset sums: testing" }, { "id": "5900f3d71000cf542c50fee9", "title": "Problem 106: Special subset sums: meta-testing" }, { "id": "5900f3d91000cf542c50feea", "title": "Problem 107: Minimal network" }, { "id": "5900f3d91000cf542c50feeb", "title": "Problem 108: Diophantine Reciprocals I" }, { "id": "5900f3db1000cf542c50feec", "title": "Problem 109: Darts" }, { "id": "5900f3db1000cf542c50feed", "title": "Problem 110: Diophantine Reciprocals II" }, { "id": "5900f3db1000cf542c50feee", "title": "Problem 111: Primes with runs" }, { "id": "5900f3dd1000cf542c50feef", "title": "Problem 112: Bouncy numbers" }, { "id": "5900f3dd1000cf542c50fef0", "title": "Problem 113: Non-bouncy numbers" }, { "id": "5900f3e01000cf542c50fef2", "title": "Problem 114: Counting block combinations I" }, { "id": "5900f3df1000cf542c50fef1", "title": "Problem 115: Counting block combinations II" }, { "id": "5900f3e01000cf542c50fef3", "title": "Problem 116: Red, green or blue tiles" }, { "id": "5900f3e21000cf542c50fef4", "title": "Problem 117: Red, green, and blue tiles" }, { "id": "5900f3e21000cf542c50fef5", "title": "Problem 118: Pandigital prime sets" }, { "id": "5900f3e41000cf542c50fef6", "title": "Problem 119: Digit power sum" }, { "id": "5900f3e41000cf542c50fef7", "title": "Problem 120: Square remainders" }, { "id": "5900f3e51000cf542c50fef8", "title": "Problem 121: Disc game prize fund" }, { "id": "5900f3e61000cf542c50fef9", "title": "Problem 122: Efficient exponentiation" }, { "id": "5900f3e71000cf542c50fefa", "title": "Problem 123: Prime square remainders" }, { "id": "5900f3e81000cf542c50fefb", "title": "Problem 124: Ordered radicals" }, { "id": "5900f3e91000cf542c50fefc", "title": "Problem 125: Palindromic sums" }, { "id": "5900f3ea1000cf542c50fefd", "title": "Problem 126: Cuboid layers" }, { "id": "5900f3ec1000cf542c50fefe", "title": "Problem 127: abc-hits" }, { "id": "5900f3ec1000cf542c50feff", "title": "Problem 128: Hexagonal tile differences" }, { "id": "5900f3ef1000cf542c50ff01", "title": "Problem 129: Repunit divisibility" }, { "id": "5900f3ee1000cf542c50ff00", "title": "Problem 130: Composites with prime repunit property" }, { "id": "5900f3ef1000cf542c50ff02", "title": "Problem 131: Prime cube partnership" }, { "id": "5900f3f11000cf542c50ff03", "title": "Problem 132: Large repunit factors" }, { "id": "5900f3f21000cf542c50ff04", "title": "Problem 133: Repunit nonfactors" }, { "id": "5900f3f21000cf542c50ff05", "title": "Problem 134: Prime pair connection" }, { "id": "5900f3f31000cf542c50ff06", "title": "Problem 135: Same differences" }, { "id": "5900f3f51000cf542c50ff07", "title": "Problem 136: Singleton difference" }, { "id": "5900f3f51000cf542c50ff08", "title": "Problem 137: Fibonacci golden nuggets" }, { "id": "5900f3f61000cf542c50ff09", "title": "Problem 138: Special isosceles triangles" }, { "id": "5900f3f71000cf542c50ff0a", "title": "Problem 139: Pythagorean tiles" }, { "id": "5900f3fa1000cf542c50ff0c", "title": "Problem 140: Modified Fibonacci golden nuggets" }, { "id": "5900f3f91000cf542c50ff0b", "title": "Problem 141: Investigating progressive numbers, n, which are also square" }, { "id": "5900f3fa1000cf542c50ff0d", "title": "Problem 142: Perfect Square Collection" }, { "id": "5900f3fc1000cf542c50ff0e", "title": "Problem 143: Investigating the Torricelli point of a triangle" }, { "id": "5900f3fc1000cf542c50ff0f", "title": "Problem 144: Investigating multiple reflections of a laser beam" }, { "id": "5900f3fd1000cf542c50ff10", "title": "Problem 145: How many reversible numbers are there below one-billion?" }, { "id": "5900f3fe1000cf542c50ff11", "title": "Problem 146: Investigating a Prime Pattern" }, { "id": "5900f3ff1000cf542c50ff12", "title": "Problem 147: Rectangles in cross-hatched grids" }, { "id": "5900f4021000cf542c50ff14", "title": "Problem 148: Exploring Pascal's triangle" }, { "id": "5900f4021000cf542c50ff13", "title": "Problem 149: Searching for a maximum-sum subsequence" }, { "id": "5900f4031000cf542c50ff15", "title": "Problem 150: Searching a triangular array for a sub-triangle having minimum-sum" }, { "id": "5900f4031000cf542c50ff16", "title": "Problem 151: Paper sheets of standard sizes: an expected-value problem" }, { "id": "5900f4041000cf542c50ff17", "title": "Problem 152: Writing one half as a sum of inverse squares" }, { "id": "5900f4051000cf542c50ff18", "title": "Problem 153: Investigating Gaussian Integers" }, { "id": "5900f4071000cf542c50ff19", "title": "Problem 154: Exploring Pascal's pyramid" }, { "id": "5900f4081000cf542c50ff1a", "title": "Problem 155: Counting Capacitor Circuits" }, { "id": "5900f4091000cf542c50ff1b", "title": "Problem 156: Counting Digits" }, { "id": "5900f4091000cf542c50ff1c", "title": "Problem 157: Solving the diophantine equation" }, { "id": "5900f40a1000cf542c50ff1d", "title": "Problem 158: Exploring strings for which only one character comes lexicographically after its neighbor to the left" }, { "id": "5900f40c1000cf542c50ff1e", "title": "Problem 159: Digital root sums of factorizations" }, { "id": "5900f40d1000cf542c50ff1f", "title": "Problem 160: Factorial trailing digits" }, { "id": "5900f40d1000cf542c50ff20", "title": "Problem 161: Triominoes" }, { "id": "5900f40e1000cf542c50ff21", "title": "Problem 162: Hexadecimal numbers" }, { "id": "5900f40f1000cf542c50ff22", "title": "Problem 163: Cross-hatched triangles" }, { "id": "5900f4111000cf542c50ff23", "title": "Problem 164: Numbers for which no three consecutive digits have a sum greater than a given value" }, { "id": "5900f4111000cf542c50ff24", "title": "Problem 165: Intersections" }, { "id": "5900f4131000cf542c50ff25", "title": "Problem 166: Criss Cross" }, { "id": "5900f4141000cf542c50ff26", "title": "Problem 167: Investigating Ulam sequences" }, { "id": "5900f4151000cf542c50ff27", "title": "Problem 168: Number Rotations" }, { "id": "5900f4151000cf542c50ff28", "title": "Problem 169: Exploring the number of different ways a number can be expressed as a sum of powers of 2" }, { "id": "5900f4161000cf542c50ff29", "title": "Problem 170: Find the largest 0 to 9 pandigital that can be formed by concatenating products" }, { "id": "5900f4181000cf542c50ff2a", "title": "Problem 171: Finding numbers for which the sum of the squares of the digits is a square" }, { "id": "5900f4181000cf542c50ff2b", "title": "Problem 172: Investigating numbers with few repeated digits" }, { "id": "5900f41a1000cf542c50ff2c", "title": "Problem 173: Using up to one million tiles how many different \"hollow\" square laminae can be formed?" }, { "id": "5900f41a1000cf542c50ff2d", "title": "Problem 174: Counting the number of \"hollow\" square laminae that can form one, two, three, ... distinct arrangements" }, { "id": "5900f41c1000cf542c50ff2e", "title": "Problem 175: Fractions involving the number of different ways a number can be expressed as a sum of powers of 2" }, { "id": "5900f41c1000cf542c50ff2f", "title": "Problem 176: Right-angled triangles that share a cathetus" }, { "id": "5900f41e1000cf542c50ff30", "title": "Problem 177: Integer angled Quadrilaterals" }, { "id": "5900f41e1000cf542c50ff31", "title": "Problem 178: Step Numbers" }, { "id": "5900f41f1000cf542c50ff32", "title": "Problem 179: Consecutive positive divisors" }, { "id": "5900f4201000cf542c50ff33", "title": "Problem 180: Rational zeros of a function of three variables" }, { "id": "5900f4231000cf542c50ff34", "title": "Problem 181: Investigating in how many ways objects of two different colors can be grouped" }, { "id": "5900f4231000cf542c50ff35", "title": "Problem 182: RSA encryption" }, { "id": "5900f4231000cf542c50ff36", "title": "Problem 183: Maximum product of parts" }, { "id": "5900f4241000cf542c50ff37", "title": "Problem 184: Triangles containing the origin" }, { "id": "5900f4251000cf542c50ff38", "title": "Problem 185: Number Mind" }, { "id": "5900f4281000cf542c50ff39", "title": "Problem 186: Connectedness of a network" }, { "id": "5900f4291000cf542c50ff3a", "title": "Problem 187: Semiprimes" }, { "id": "5900f4291000cf542c50ff3b", "title": "Problem 188: The hyperexponentiation of a number" }, { "id": "5900f4291000cf542c50ff3c", "title": "Problem 189: Tri-coloring a triangular grid" }, { "id": "5900f42b1000cf542c50ff3d", "title": "Problem 190: Maximizing a weighted product" }, { "id": "5900f42b1000cf542c50ff3e", "title": "Problem 191: Prize Strings" }, { "id": "5900f42c1000cf542c50ff3f", "title": "Problem 192: Best Approximations" }, { "id": "5900f42f1000cf542c50ff41", "title": "Problem 193: Squarefree Numbers" }, { "id": "5900f42f1000cf542c50ff40", "title": "Problem 194: Colored Configurations" }, { "id": "5900f4311000cf542c50ff43", "title": "Problem 195: Inscribed circles of triangles with one angle of 60 degrees" }, { "id": "5900f4301000cf542c50ff42", "title": "Problem 196: Prime triplets" }, { "id": "5900f4311000cf542c50ff44", "title": "Problem 197: Investigating the behavior of a recursively defined sequence" }, { "id": "5900f4331000cf542c50ff45", "title": "Problem 198: Ambiguous Numbers" }, { "id": "5900f4341000cf542c50ff46", "title": "Problem 199: Iterative Circle Packing" }, { "id": "5900f4351000cf542c50ff47", "title": "Problem 200: Find the 200th prime-proof sqube containing the contiguous sub-string \"200\"" } ], "blockLayout": "legacy-challenge-list" }