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Lakshman's user avatar
Lakshman's user avatar
Lakshman
  • Member for 10 years, 2 months
  • Last seen more than a month ago
  • Bangalore, Karnataka, India
6 votes
1 answer
2k views

Prime Triangle:: How to find the position(row and column) of prime number in a triangular arrangement

6 votes
1 answer
2k views

Order of fibonacci modulo p, where p is a prime number

6 votes
0 answers
87 views

How many number of non zero pairs $(a,b)$ such that $a,b$ are both palindrome numbers, and the sum of $a$ and $b$ is $A.$.

3 votes
0 answers
151 views

Computing $w(n)$ : How many integer in range$ 1..n$ have distinct prime divisor equals to k.

3 votes
3 answers
2k views

How to find the sum of $k$th powers of all proper divisors of first $n$ numbers

3 votes
0 answers
676 views

Sum of $k$th power of first $n$ natural number (power sum)

2 votes
1 answer
6k views

How to Find the smallest integer with exactly N odd divisors.

2 votes
1 answer
84 views

How many different right triangles are possible with the shorter side of odd length?

1 vote
0 answers
277 views

Given an integer $n$ find smallest integer $i$ such that $σ(i)=n$. Smallest Inverse Sum of Divisors

-1 votes
1 answer
225 views

How many ways a number can be represented as sum of distinct primes