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In the American system, 10^(303).

In the American system, 10^(33).

In the American system, 10^(39).

An emirp ("prime" spelled backwards) is a prime whose (base 10) reversal is also prime, but which is not a palindromic prime. The first few are 13, 17, 31, 37, 71, 73, 79, ...

The canonical generator of the nonvanishing homology group on a topological manifold.

In the American system, 10^(30).

An integer that is either 0 or positive, i.e., a member of the set Z^*={0} union Z^+, where Z-+ denotes the positive integers.

An integer that is either 0 or negative, i.e., a member of the set {0} union Z^-, where Z-- denotes the negative integers.

In the American system, 10^(60).

In the American system, 10^(27).