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Number Theory

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All Number Theory problems

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⊣ 204 Count Primes
⊣ 258 Add Digits
⊣ 858 Mirror Reflection
⊣ 866 Prime Palindrome
⊣ 914 X of a Kind in a Deck of Cards
⊣ 952 Largest Component Size by Common Factor
⊣ 1201 Ugly Number III
⊣ 1250 Check If It Is a Good Array
⊣ 1447 Simplified Fractions
⊣ 1492 The kth Factor of n
⊣ 1627 Graph Connectivity With Threshold
⊣ 1735 Count Ways to Make Array With Product
⊣ 1766 Tree of Coprimes
⊣ 1799 Maximize Score After N Operations
⊣ 1808 Maximize Number of Nice Divisors
⊣ 1819 Number of Different Subsequences GCDs
⊣ 1952 Three Divisors
⊣ 1979 Find Greatest Common Divisor of Array
⊣ 1994 The Number of Good Subsets
⊣ 1998 GCD Sort of an Array (PRO)
⊣ 2001 Number of Pairs of Interchangeable Rectangles
⊣ 2117 Abbreviating the Product of a Range
⊣ 2183 Count Array Pairs Divisible by K
⊣ 2197 Replace Non-Coprime Numbers in Array
⊣ 2221 Find Triangular Sum of an Array
⊣ 2280 Minimum Lines to Represent a Line Chart
⊣ 2338 Count the Number of Ideal Arrays
⊣ 2344 Minimum Deletions to Make Array Divisible
⊣ 2413 Smallest Even Multiple
⊣ 2427 Number of Common Factors
⊣ 2447 Number of Subarrays With GCD Equal to K
⊣ 2470 Number of Subarrays With LCM Equal to K
⊣ 2507 Smallest Value After Replacing With Sum of Prime Factors
⊣ 2513 Minimize the Maximum of Two Arrays
⊣ 2521 Distinct Prime Factors of Product of Array
⊣ 2523 Closest Prime Numbers in Range
⊣ 2543 Check if Point Is Reachable
⊣ 2584 Split the Array to Make Coprime Products
⊣ 2601 Prime Subtraction Operation
⊣ 2607 Make K-Subarray Sums Equal
⊣ 2614 Prime In Diagonal
⊣ 2654 Minimum Number of Operations to Make All Array Elements Equal to 1
⊣ 2709 Greatest Common Divisor Traversal (PRO)
⊣ 2748 Number of Beautiful Pairs
⊣ 2761 Prime Pairs With Target Sum
⊣ 2807 Insert Greatest Common Divisors in Linked List
⊣ 2818 Apply Operations to Maximize Score
⊣ 2862 Maximum Element-Sum of a Complete Subset of Indices
⊣ 2867 Count Valid Paths in a Tree
⊣ 2947 Count Beautiful Substrings I
⊣ 2949 Count Beautiful Substrings II
⊣ 3012 Minimize Length of Array Using Operations
⊣ 3044 Most Frequent Prime
⊣ 3115 Maximum Prime Difference
⊣ 3116 Kth Smallest Amount With Single Denomination Combination
⊣ 3233 Find the Count of Numbers Which Are Not Special
⊣ 3260 Find the Largest Palindrome Divisible by K
⊣ 3312 Sorted GCD Pair Queries (PRO)
⊣ 3326 Minimum Division Operations to Make Array Non Decreasing
⊣ 3334 Find the Maximum Factor Score of Array
⊣ 3336 Find the Number of Subsequences With Equal GCD
⊣ 3348 Smallest Divisible Digit Product II
⊣ 3377 Digit Operations to Make Two Integers Equal
⊣ 3378 Count Connected Components in LCM Graph
⊣ 3411 Maximum Subarray With Equal Products
⊣ 3444 Minimum Increments for Target Multiples in an Array
⊣ 3461 Check If Digits Are Equal in String After Operations I
⊣ 3463 Check If Digits Are Equal in String After Operations II
⊣ 3556 Sum of Largest Prime Substrings
⊣ 3569 Maximize Count of Distinct Primes After Split
⊣ 3574 Maximize Subarray GCD Score
⊣ 3589 Count Prime-Gap Balanced Subarrays
⊣ 3591 Check if Any Element Has Prime Frequency
⊣ 3605 Minimum Stability Factor of Array
⊣ 3618 Split Array by Prime Indices
⊣ 3629 Minimum Jumps to Reach End via Prime Teleportation
⊣ 3658 GCD of Odd and Even Sums
⊣ 3669 Balanced K-Factor Decomposition
⊣ 3671 Sum of Beautiful Subsequences
⊣ 3715 Sum of Perfect Square Ancestors
⊣ 3725 Count Ways to Choose Coprime Integers from Rows
⊣ 3765 Complete Prime Number
⊣ 3770 Largest Prime from Consecutive Prime Sum
⊣ 3850 Count Sequences to K