EPRNs (Equal Product of Reversible Numbers): numbers which can be expressed as the product of two reversible numbers in at least two different ways.
2520, 4030, 5740, 7360, 7650, 9760, 10080, 12070, 13000, 14580, 14620, 16120
1 seqfan posts
Tue Feb 14 06:19:25 CET 2012 [seqfan] EPRNs