User blog comment:Billicusp/messing around/@comment-24920136-20160428041316

I can easily beat your number. B_1(n) = Ac(#n,n+100) and B_2(n) = B_1(B_1(....(n)) with B_1(n times googol) copies of B_1. Then i define B_3 in the same way as B_2, except it uses B_2(...., thus my number B_rayo's number(rayo's number) beats your number