3 × 7 × 47 × 2207 × 4481
1, 3, 7, 21, 47, 141, 329, 987, 2207, 4481, 6621, 13443, 15449, 31367, 46347, 94101, 103729, 210607, 311187, 631821, 726103, 1474249, 2178309, 4422747, 9889567, 29668701, 69226969, 207680907, 464809649, 1394428947, 3253667543 and 9761002629
No.
Its nearest Fibonacci number neighbors are 7778742049 and 12586269025.