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Please enter a number between 2 and 239 [inclusive].
The isomorphism classes of your number will then be listed.
(You can also simply hit "Find Groups" to have a number chosen at random.)

25 = 5 * 5
Thus there are two nonisomorphic abelian groups of order 25,
(1) Z5 ⊕ Z5
(2) Z25

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