Difference between revisions of "Euler problems/41 to 50"
Revision as of 08:21, 27 March 2007
What is the largest n-digit pandigital prime that exists?
problem_41 = undefined
How many triangle words can you make using the list of common English words?
problem_42 = undefined
Find the sum of all pandigital numbers with an unusual sub-string divisibility property.
problem_43 = undefined
Find the smallest pair of pentagonal numbers whose sum and difference is pentagonal.
problem_44 = undefined
After 40755, what is the next triangle number that is also pentagonal and hexagonal?
problem_45 = undefined
What is the smallest odd composite that cannot be written as the sum of a prime and twice a square?
problem_46 = undefined
Find the first four consecutive integers to have four distinct primes factors.
problem_47 = undefined
Find the last ten digits of 11 + 22 + ... + 10001000.
problem_48 = undefined
Find arithmetic sequences, made of prime terms, whose four digits are permutations of each other.
problem_49 = undefined
Which prime, below one-million, can be written as the sum of the most consecutive primes?
problem_50 = undefined