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Eightman band

The letters of EIGHTMAN represent different digits. When representing a number, ENIGMA is the product of GGG and TTT. Furthermore, a six-digit number using the letters of ENIGMA in a different order is the product of GGG and HHH.

Please send in the number EIGHTMAN.

WIN £15 will be awarded to the sender of the first correct answer opened on Wednesday 22 July. The Editor’s decision is final. Please send entries to Enigma 1550, New Å®ÉúСÊÓƵ, Lacon House, 84 Theobald’s Road, London WC1X 8NS, or to enigma@newscientist.com (please include your postal address).

Answer to 1544 Spanish squares: The numerical value of the square root of (CERO x UNO x NUEVE) is 812224

The winner Richard Harvey of Ancaster, Ontario, Canada