Base 10 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
151: | \[{10^{151}-1\over9}\] | 907 × 429360649 × 29877981480806017715604631<26> × 28656552837574546515657117360191971140211910788651135283<56> × 3332366532260724652058380106533605034666939213869789759449<58> |