• Home
  • Learn
  • Feed
  • Ladder
  • Saved
← Roadmapsall math & number theory problems
🧮

Math & Number Theory

Digits, primes, GCD/LCM, combinatorics.

5 stops · 192 problems0/80 on the path done
next ▸ Palindrome NumberSilver · 1050
1

Digits & bases

0/16 of 30you are here

Reverse, palindrome, add digits, roman, base.

○Palindrome Number○Harshad Number○Add Digits (Digital Root)○Add Digits To Root○Convert to Base 7○Sum of Digits of a Harshad Number○Count Digits That Divide○Reverse Integer○Count Digits That Divide a Number○Harshad Number Check○Alternating Digit Sum○Count Digits○Excel Column To Number○Base 7○Add Digits○Number To Excel Column+14 in the arena
2

Primes & factors

0/16 of 25

Count primes, ugly, perfect, happy numbers.

○Coprime Check○Is Prime○Perfect Number Check○Ugly Number○Nth Prime Number○Smallest Prime Factor○Happy Number○Ugly Number Check○Prime Factorization○Perfect Number○Count Primes Below N○Trailing Zeroes in Factorial○Factorial Trailing Zeros○Count Primes in a Range○Is It A Perfect Number○Count Primes+9 in the arena
3

GCD/LCM & power

0/16 of 21

GCD, LCM, sqrt, pow, fast exponentiation.

○Greatest Common Divisor○Valid Perfect Square○Power of Three○Least Common Multiple○GCD of an Array○GCD of Two Numbers○Power Function○GCD Of Array○LCM of Two Numbers○Count Divisors Of N○Integer Power○Sum Of Digit Powers○Floor Integer Square Root○Multiplicative Persistence○Pow(x, n)○Pow(x, n) Integer+5 in the arena
4

Counting & sums

0/16 of 17

FizzBuzz, multiples, candies, triangle.

○FizzBuzz Array○Nim Game Winner○Fizz Buzz○Bulb Switcher○Minimum Time To Visit Points○Arranging Coins○Bulb Switcher Count○Minimum Moves to Equal Array○Three Consecutive Integers Summing to a Number○Sum of Multiples○Nth Digit of the Sequence○Distribute Candies to People○Water and Jug Problem○Nth Digit of Concatenation○Nth Digit○Minimum Area Rectangle+1 in the arena
5

More Math & Number Theory

0/16 of 99

Everything else in this category — keep climbing.

○Sum of First N Naturals○Robot Return To Origin○Number of Subsets○Smallest Even Multiple○Factorial○Sum of Digits○Sum of Divisors○Plus One○Pascal's Triangle Row○Rectangle Overlap○Numbers With Even Digit Count○Count Odd Numbers In Range○Even and Odd Bits○N Choose K○Steps To Reduce A Number To Zero○Minutes To Clock String+83 in the arena
🏁Finish line