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Enigma Number 1536

List of primes

Use each of the digits 0 to 9 exactly twice to make a list of prime numbers. Your primes must all be different, and their sum must be as small as possible. Neither 0 nor 1 is a prime, and 0 may not be a leading digit.

What is the sum of the prime numbers in your list?

WIN £15 will be awarded to the sender of the first correct answer opened on Wednesday 15 April. The Editor’s decision is final. Please send entries to Enigma 1536, Âé¶¹´«Ã½, Lacon House, 84 Theobald’s Road, London WC1X 8NS, or to enigma@newscientist.com (please include your postal address).

Answer to 1530 Tom Daley: The 5-digit number represented by DALEY is 10348

The winner John Laurenson of Wellington, New Zealand

Topics: prime numbers

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