Problems

1 – 19 of 19

Problem Title Likes Solvers Difficulty

Problem 57869. Identify de Polignac numbers

Created by: ChrisR

Tags primes, number theory, sequence

Problem 55275. List the semiprimes

Created by: ChrisR

Tags primes, number theory, sequence

Problem 58018. List the Fermi-Dirac primes

Created by: ChrisR

Tags primes, number theory

Problem 60581. List primes of the form xy+z

Created by: ChrisR

Tags primes, number theory, sequence

Problem 54755. List odd twin composites

Created by: ChrisR

Tags primes, number theory, sequence

Problem 52956. Compute the largest number whose prime factors sum to n

Created by: ChrisR

Tags primes, sequence, integer complexity

Problem 52881. List the cuban primes

Created by: ChrisR

Tags primes, project euler, sequence

Problem 59126. Compute the bubble popper fidget spinner sequence

Created by: ChrisR

Tags binary, sequence, modulo

Problem 59836. Determine whether a number is a Gaussian prime

Created by: ChrisR

Tags primes, mod, complex

Problem 57810. List the two-bit primes

Created by: ChrisR

Tags primes, strings, puzzle

Problem 59170. Determine whether a number is a Zeisel number

Created by: ChrisR

Tags primes, sequence, recurrence

Problem 59701. Express numbers as the sum of a prime, a square, and a cube

Created by: ChrisR

Tags primes, puzzle, partitions

Problem 58019. Factor a number into Fermi-Dirac primes

Created by: ChrisR

Tags primes, number theory

Problem 53810. List the Beatriz numbers

Created by: ChrisR

Tags primes, number theory, sequence

Problem 54620. List the Euclid numbers

Created by: ChrisR

Tags primes, sequence, infinitude

Problem 57815. List numbers such that every sum of consecutive positive integers ending in those numbers is composite

Created by: ChrisR

Tags primes, sequence, triangular

Problem 57477. Solve an equation involving primes and fractions

Created by: ChrisR

Tags primes, number theory, sequence

Problem 58498. Compute the Sisyphus sequence

Created by: ChrisR

Tags primes, sequence, mythology

Problem 52664. List the Moran numbers

Created by: ChrisR

Tags primes, speed, sequence

1 – 19 of 19

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Problem Groups

Problems

Problem 57869. Identify de Polignac numbers

Problem 55275. List the semiprimes

Problem 58018. List the Fermi-Dirac primes

Problem 60581. List primes of the form xy+z

Problem 54755. List odd twin composites

Problem 52956. Compute the largest number whose prime factors sum to n

Problem 52881. List the cuban primes

Problem 59126. Compute the bubble popper fidget spinner sequence

Problem 59836. Determine whether a number is a Gaussian prime

Problem 57810. List the two-bit primes

Problem 59170. Determine whether a number is a Zeisel number

Problem 59701. Express numbers as the sum of a prime, a square, and a cube

Problem 58019. Factor a number into Fermi-Dirac primes

Problem 53810. List the Beatriz numbers

Problem 54620. List the Euclid numbers

Problem 57815. List numbers such that every sum of consecutive positive integers ending in those numbers is composite

Problem 57477. Solve an equation involving primes and fractions

Problem 58498. Compute the Sisyphus sequence

Problem 52664. List the Moran numbers