Euler problems/41 to 50
What is the largest n-digit pandigital prime that exists?
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How many triangle words can you make using the list of common English words?
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Find the sum of all pandigital numbers with an unusual sub-string divisibility property.
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Find the smallest pair of pentagonal numbers whose sum and difference is pentagonal.
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After 40755, what is the next triangle number that is also pentagonal and hexagonal?
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What is the smallest odd composite that cannot be written as the sum of a prime and twice a square?
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Find the first four consecutive integers to have four distinct primes factors.
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Find the last ten digits of 11 + 22 + ... + 10001000.
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Find arithmetic sequences, made of prime terms, whose four digits are permutations of each other.
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10 Problem 50
Which prime, below one-million, can be written as the sum of the most consecutive primes?
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