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Old 2020-10-23, 08:51   #21
Viliam Furik
 
"Viliam Furík"
Jul 2018
Martin, Slovakia

52·13 Posts
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Quote:
Originally Posted by ONeil View Post
This is what I said
No, it is not. It is what you meant by it, but not what you actually said. But I understand now.

But there's a little sense in saying that. If the Mersenne number (2p-1) is prime, there is no discussion about factors. If it's not a prime, well, the only other option is that it is composite, which means it does have prime factors, but if it has strictly more than 2 of them (all the time, except for a very small part of those numbers), then the product of any two prime factors is also a factor, but a composite one.
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