Base 3 Repunits
Table
Format: small prime × proven prime<size> × (probable prime)<size> × [composite]<size> × {unknown}<size>
| 660: | \[{3^{660}-1\over2}\] | 23 × 52 × 7 × 113 × 13 × 23 × 31 × 61 × 67 × 73 × 271 × 331 × 661 × 991 × 1181 × 1321 × 3851 × 4561 × 4951 × 5501 × 25411 × 50821 × 176419 × 177101 × 570461 × 659671 × 1286011 × 47763361 × 2413941289 × 4968781621<10> × 11123788282861<14> × 24472341743191<14> × 560088668384411<15> × 111326949838019521<18> × 13490012358249728401<20> × 927319729649066047885192700193701<33> × 4183739978746243239852385111562221<34> × 176866524087860744584118689063694356357715157683631402084481<60> |