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Reverse division

1. What is the four-digit integer divisible by 11 and 13 whose reverse is a larger integer also divisible by 11 and 13?

2. What is the four-digit integer divisible by 17 and 19 whose reverse is a larger integer also divisible by 17 and 19?

Neither of your answers may have a leading zero.

WIN £15 will be awarded to the sender of the first correct answer opened on Wednesday 9 September. The Editor’s decision is final. Please send entries to Enigma 1557, ¿ìè¶ÌÊÓƵ, Lacon House, 84 Theobald’s Road, London WC1X 8NS, or to enigma@newscientist.com (please include your postal address).

Answer to 1551 The same chance: X represents 14

The winner Jet Foncannon of Philadelphia, Pennsylvania, US