If enough people tell me why, then I'll respond with my personal opinion on NB-based primes. The logic of these guys on how to make prime NBs be like: Find a prime number, like 647. Find what n-th prime it is, in this case 647 is 118th prime (Like how they say it). Make a rather basic arrangement using G5 colours and blocks since they don't know about the real G6 200+. Get mrBond's 118 since it's 118th prime, and slap his face and limbs on. Maybe also add stuff like "647 is 118th prime". And there you have it, a 647 that looks like 118.
(c) Numberblocks 37 to 229 is owned by @mrBond4310. 231+ is owned by mostly @zavodilathenb. (why is it almost everytime 7x11 and other eleven multiples have to have 11's gear like 55 didn't have that so we only have to wait for the rest to be official (plz don't make them like the dym cids do))
