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Play Outside In with primes

3 years ago

Solved

Find pairs of primes with the same digit sum and a specified separation

3 years ago

Solved

List prime anagrams of a number

3 years ago

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Label primes with the Erdos-Selfridge classification

3 years ago

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List the nth prime quartet prefix
Prime numbers larger than 5 can end only in 1, 3, 7, or 9, but of course not all numbers ending in these four digits are prime. ...

3 years ago

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Determine whether a number is unprimeable
The number 204 is unprimeable because no single digit can be changed to make it prime. In contrast, the number 207 is not unprim...

3 years ago

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List Proth primes

3 years ago

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Identify prime words

3 years ago

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Find the smallest prime with n inside
Consider the sequence that begins 101, 113, 127, 131, 149, 151, 163,... Not only is every term prime, the th term is the smalles...

3 years ago

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Compute home primes in a given base

3 years ago

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Determine whether a number is a prime self number
Integers can be classified as generated numbers or self numbers. A generated number is one that can be expressed as the sum of a...

3 years ago

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Find the last digit
FInd the last digit of a given number. Given number is the input and output should be the last digit of that number.

3 years ago

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Find remainder when x is divided by 3
Find remainder when x is divided by 3

3 years ago

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0<=x<=pi?
Check whether the given angle is between zero and pi. Return logical true or false.

3 years ago

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Volume of Cylinder
Find the volume of a cylinder

3 years ago

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Row avg

3 years ago

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Factorial

3 years ago

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F.R.I.E.N.D.S

3 years ago

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sign function

3 years ago

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Array Concatenation (1)
Given two matrices, a and b, concatenate the two matrices horizontally, i.e., the number of columns of the result should be equa...

3 years ago

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Spherical Volume
Calculate the volume of a sphere.

3 years ago

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Kinetic Energy
Given mass, m, and kinetic energy, KE, find the velocity of the object.

3 years ago

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cube of number
find cube of number

3 years ago

Solved

Evaluate the prime zeta function

3 years ago

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Evaluate the gamma function
The gamma function is a generalization of the factorial, and it appears in many applications such as evaluating certain integral...

3 years ago

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Penny Flipping: Reverse subsets of a sequence of coins until you recover the original configuration
The original Penny Flipping Problem (PF-1) starts with a stack of N pennies arranged with all the coins heads up. The first oper...

3 years ago

Solved

Identify Ruth-Aaron numbers
After Hank Aaron hit his 715th home run and passed Babe Ruth’s total of 714, Carl Pomerance noticed that the union of the prime ...

3 years ago

Solved

Fill a rectangle with 1x1 and 2x2 tiles
A 3x2 rectangle can be filled with 1x1 and 2x2 tiles in three ways: The colors merely distinguish the sizes of the tiles. A 3...

3 years ago

Solved

List Honaker primes
The number 131 is the 32nd prime number. It is a Honaker prime because the sum of its digits (1+3+1) equals the sum of the digit...

3 years ago

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Pairwise Euclidean Distance
Given two matrices A,B of dimensions NxK and NxL respectively, calculate the pairwise euclidean distance of all vectors (columns...

3 years ago