 reserve n,i,k,m for Nat;
 reserve p for Prime;

theorem Set2:
  SetPrimes 2 = {2}
  proof
    not 1 is Prime by INT_2:def 4; then
A1: not 1 in SetPrimes by NEWTON:def 6;
    2 in SetPrimes by NEWTON:def 6,INT_2:28;
    hence thesis by ZFMISC_1:54,A1,FINSEQ_1:2;
  end;
