Base 13 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
166: | \[{13^{166}-1\over12}\] | 2 × 7 × 167 × 499 × 12451 × 1383113 × 1386931777883518057046869588983880892136291513972206972463883515737484028199438341<82> × 245670601419069026380308534703964258313722900725843951699515626500670037578317283480729<87> |