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Is 45 prime

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Anonymous

15y ago
Updated: 4/28/2022

No 45 is composite and not prime. 5 is the only number ending with 5 who is prime.
This is because any other number ending in 5 is a multiple of 5 and hence composite.
Same if true of 10, 20 and all those numbers ending in 0 except 0 itself.

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Wiki User

15y ago

What else can I help you with?