PRP in base 11 and 13 For 119^n-118^n, I found hitherto: 119^13-118^13 119^59-118^59 119^103-118^103 119^3079-118^3079 119^4813-118^4813, discoverer Mike Oakes 119^24223-118^24223 119^24443-118^24443
To be completed...