Hackerrank , Project Euler #5: Smallest multiple

Project Euler #5: Smallest multiple

from fractions import gcd

def lcm(numbers):

    return reduce(lambda x, y: (x*y)/gcd(x,y), numbers)

t=input()

for i in range(0,t):

    print lcm(range(1,input()+1))

Hackerrank , Project Euler #4: Largest palindrome product

Project Euler #4: Largest palindrome product

# Enter your code here. Read input from STDIN. Print output to STDOUT
t=input()
for i in range(0,t):
    no=input()
    for k in range(no-1,101100,-1):
        if str(k)==str(k)[::-1]:
            lst = [k for e in range(100,999) if k%e==0 and len(str(k/e))==3]
            if lst :
                print max(lst)
                break

Hckerrank , Project Euler #3: Largest prime factor

Project Euler #3: Largest prime factor

# Enter your code here. Read input from STDIN. Print output to STDOUT

t=input()

def largest_prime_factor(n):

    i = 2

    while i * i <= n:

        if n % i:

            i += 1

        else:

            n //= i

    return n

for j in range(0,t):

    n=input()

    print largest_prime_factor(n)