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88.31 Sum of the factorials of the digits of integers

Published online by Cambridge University Press:  01 August 2016

Shyam Sunder Gupta*
North Central Railway, Allahabad, Uttar Pradesh, India, e-mail:


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Copyright © The Mathematical Association 2004

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1. Poole, George D., Integers and the sum of the factorials of their digits, Maths. Mag. 44 (1971) pp. 278279.CrossRefGoogle Scholar
2. Pickover, Clifford A., Keys to infinity, John Wiley (1997).Google Scholar