Nuprl - Proof: composite with prime factor 1 1 1 1 1

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At: composite with prime factor 1 1 1 1 1

1. x :

x1:

. x1<x

prime(x1)

(

i,j:{2..x1

}. x1 = i

j & prime(i))
3. 2

x
4.

prime(x)
5. i : {2..x

}
6. j : {2..x

}
7. x = i

j
8. prime(i)

i,j:{2..x

}. x = i

j & prime(i)

By:	Witness: i \| j ...

Generated subgoals:

None

About:

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