Tag: number-theory

22 List Prime Numbers 2016-01-24T14:59:40.047

22 Print the Super Collatz numbers 2016-02-04T01:08:49.223

22 Reverse and subtract 2016-06-30T14:20:47.300

22 Calculate the partitions of N 2016-06-30T23:10:22.433

22 Sum the First n Even Fibonacci Numbers 2017-01-03T23:40:22.053

22 Find the smallest positive integer which has all integers from 1 to n as factors 2017-01-04T10:52:14.297

22 Divide and divide and conquer 2017-03-24T20:27:09.090

22 Reverse and add degeneracy 2017-04-24T00:59:07.067

22 Is it a super-prime? 2017-07-07T21:20:55.917

22 Generate Numpad-Friendly Numbers 2017-09-24T22:09:53.023

22 Largest Prime Exponents 2017-10-21T17:43:20.337

22 Digit Product Sequences 2018-04-23T14:42:37.097

22 Is this a consecutive-prime/constant-exponent number? 2018-05-16T15:36:56.327

22 Eight coins for the fair king 2018-12-25T10:15:17.523

21 Hamming numbers 2011-01-27T21:14:54.200

21 Combinatorial products of unique primes 2014-09-21T20:01:40.183

21 Chinese Remainder Theorem 2015-03-22T01:01:10.553

21 Row of natural numbers 2015-08-05T13:47:09.810

21 Partitioning reciprocals 2016-01-10T09:48:28.960

21 Generate the minimal remainder sequence 2016-04-14T16:28:33.157

21 Fibonacci Factorization 2016-06-18T05:39:13.757

21 Is my number a de Polignac number? 2017-06-30T15:18:16.183

21 Product of Divisors 2017-07-08T05:49:54.503

21 Pascal's Alternating Triangle 2017-08-09T13:40:53.167

21 Determine Superabundance 2017-12-19T13:51:34.913

21 Recursive Collatz Conjecture 2018-01-07T23:21:13.020

21 Congruent Numbers 2019-04-26T18:42:53.933

20 Generate Recamán's sequence 2014-09-11T16:49:54.763

20 Novel Prime Factors of Repunits 2015-12-14T16:17:32.123

20 Finite Cantor's Diagonal 2016-05-05T12:38:31.260

20 Return the nth digit of the sequence of aliquot series 2016-07-12T06:54:13.573

20 Find the Emirps! 2016-11-09T20:07:25.117

20 Proper Divisor mash-up 2017-06-24T11:17:05.153

20 How does the square end? 2017-07-27T13:35:50.400

20 Make two numbers co-prime while preserving their least common multiple 2017-09-15T12:38:00.470

20 Minimal sparse rulers 2017-11-26T18:25:49.353

20 Factor-poor numbers 2018-01-03T12:06:08.470

20 Is this a truncated triangular number? 2018-03-05T19:05:43.213

20 Dirichlet Convolution 2018-11-16T19:33:58.710

19 Calculate hamming weight with low hamming weight 2012-06-07T13:02:29.230

19 Find largest prime which is still a prime after digit deletion 2013-02-21T14:27:06.763

19 Four Squares Together 2014-05-17T23:58:15.577

19 Generate Ulam Numbers 2014-09-08T01:04:31.063

19 Reverse and square 2015-11-29T18:34:42.417

19 Discrete Convolution or Polynomial Multiplication 2016-05-16T18:55:39.383

19 (KevinC's) Triangular DeciDigits Sequence 2016-10-14T09:42:14.590

19 Your Base to 1-2-3-Tribonacci to Binary back to Your Base 2017-02-07T15:06:44.717

19 Fermat's factorization helper 2017-04-16T17:14:12.260

19 Subtract my odds from my evens 2017-07-10T16:39:12.913

19 Writing rational numbers as ratio of factorials of primes 2017-10-06T20:57:55.183

19 Write it into number theory style 2018-01-04T05:09:52.893

19 Swap program halves to test divisors 2018-03-17T14:03:02.250

19 Repeat this GCD operation 2018-11-01T23:46:39.723

18 Calculate practical numbers 2014-03-15T10:23:02.443

18 Crazy Librarian's Arithmetic Sequence of Primes 2015-10-05T14:21:10.857

18 Hilbert Primes Golf 2015-12-07T04:34:51.927

18 The Kimberling Sequence 2015-12-23T20:55:20.747

18 Output the juggler sequence 2016-02-15T03:24:23.200

18 Excessive Integers 2016-08-28T12:01:37.853

18 Compute the Mertens function 2016-09-29T05:44:39.300

18 Goldbach partitions 2016-10-22T00:03:53.327

18 Gilbreath's Conjecture 2017-05-14T04:00:09.757

18 Calculate the inverse modulus 2017-05-16T19:48:31.100

18 Find the nearest biquadratic number 2017-07-10T09:37:51.697

18 Find the largest number of distinct integers that sum to n 2018-01-04T23:24:39.640

18 Rotational Average 2018-04-16T15:03:14.487

18 Conway's Prime Game 2018-04-19T19:53:39.527

18 Is the word coprime? 2018-09-27T00:27:45.467

18 Is this number a hill number? 2018-11-19T10:56:53.303

18 Dividing Divisive Divisors 2019-09-09T13:19:19.027

17 Square Number Digit Density 2011-06-01T14:31:53.490

17 Reverse odd runs 2016-07-03T04:32:06.103

17 Shamir's Secret Sharing 2016-07-07T15:34:44.333

17 Find numbers within the Copeland–Erdős constant 2016-07-17T22:41:54.790

17 Fastest tweetable integer factorizer 2017-07-08T19:10:29.513

17 Cyclotomic polynomial 2017-09-27T19:39:28.877

17 Split the bits! 2018-08-06T15:02:43.057

17 Do I have a twin with permutated remainders? 2019-04-04T15:36:52.707

16 Last k digits of Powers of 2 2011-03-26T06:14:14.697

16 Undulant numbers 2011-07-11T16:49:16.420

16 Period of the decimal representation 2014-01-15T09:50:40.183

16 Generate Hofstadter's Figure-Figure Sequence 2014-09-09T15:10:31.013

16 Testing if a number is a square 2015-04-27T20:57:21.430

16 Find maximal matching in divisibility relation 2015-11-25T09:12:39.700

16 Converging Sums of a Fractal Sequence 2015-12-08T13:48:54.920

16 Base Conversion With Strings 2016-01-11T17:46:03.923

16 Split, flip and recombine integers 2016-01-27T16:48:07.620

16 Decompose a number! 2016-05-01T03:03:53.863

16 Find the n-th perfect power! 2016-05-01T09:16:59.830

16 Digital Diversity 2016-10-14T18:07:35.793

16 Sum Chain Sequence 2016-10-25T13:17:42.190

16 One 1, Two 1's, One 2 One 1 2017-01-31T23:21:43.593

16 Additive Primes amongst first x Primes 2017-03-05T13:50:51.273

16 Trithagorean Triples 2017-05-24T15:06:31.073

16 Miller-Rabin Strong Pseudoprimes 2017-05-30T22:42:11.260

16 How many partitions do I have? 2017-08-31T15:31:21.590

16 Find if a list is an ABC-triple 2019-01-03T11:53:40.473

15 Write program which verifies Erdős–Straus conjecture 2014-07-21T11:48:27.710

15 Generate The SUDSI Sequence 2015-03-25T07:10:27.997