[freyr]

The number is 1bp49b. The base-10 values of b and p are 11 and 25, respectively. The decimal value of the number is then:

    1*36^5 + b*36^4 + p*36^3 + 4*36^2 + 9*36^1 + b*36^0
    = 36^5 + 11*36^4 + 25*36^3 + 4*36^2 + 9*36 + 11
    = 80113871

I'll start on Monday.