Availability:Arithmetic function (see is/2)
+IntExpr1 lcm +IntExpr2Result is the least common multiple of IntExpr1,
system is compiled for bounded integers only lcm/2
produces an integer overflow if the product of the two expressions does
not fit in a 64 bit signed integer. The default build with unbounded
integer support has no such limit. If either expression
evaluates to zero the LCM is zero.