10.1.00100.24600
"10.1.0" = TM1 10.1.0
"00100" = FP1
"24600" = Build number, useful for IBM Support.
The important numbers are the middle ones (00100).
The first is part of the major release (aka 10.1.10000 = TM1 10.1.1)
The next 2 numbers are for the FP.
The last 2 numbers are for the IF (aka Hotfix).
Examples:
10.1.00100.24600 = TM1 10.1.0 FP1
10.1.10000.26473 = TM1 10.1.1 Base Release
10.1.10100.31864 = TM1 10.1.1 FP1 (For 10.1.1 FP2 this would be 10.1.10200.xxxxx)
10.1.10104.34644 = TM1 10.1.1 FP1 IF4