Base 15 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| * 341: | \[{15^{341}-1\over14}\] | 67 × 311 × 463 × 2333 × 8537 × 381239 × 50091487468745647<17> × 660603097954354915026956925328631<33> × [3284378823894541419481251369501258938549494484588670887826610539068451094318086535140376479190217491226891332057167581012613491389936619964940434887510361410212231806158043099365029807965270003052114738330166663871816199735780639815263361118820191734705816135144224092032753334635415617470147363520473546212344398517168321974950217<331>] |