
theorem
  7487 is prime
proof
  now
    7487 = 2*3743 + 1; hence not 2 divides 7487 by NAT_4:9;
    7487 = 3*2495 + 2; hence not 3 divides 7487 by NAT_4:9;
    7487 = 5*1497 + 2; hence not 5 divides 7487 by NAT_4:9;
    7487 = 7*1069 + 4; hence not 7 divides 7487 by NAT_4:9;
    7487 = 11*680 + 7; hence not 11 divides 7487 by NAT_4:9;
    7487 = 13*575 + 12; hence not 13 divides 7487 by NAT_4:9;
    7487 = 17*440 + 7; hence not 17 divides 7487 by NAT_4:9;
    7487 = 19*394 + 1; hence not 19 divides 7487 by NAT_4:9;
    7487 = 23*325 + 12; hence not 23 divides 7487 by NAT_4:9;
    7487 = 29*258 + 5; hence not 29 divides 7487 by NAT_4:9;
    7487 = 31*241 + 16; hence not 31 divides 7487 by NAT_4:9;
    7487 = 37*202 + 13; hence not 37 divides 7487 by NAT_4:9;
    7487 = 41*182 + 25; hence not 41 divides 7487 by NAT_4:9;
    7487 = 43*174 + 5; hence not 43 divides 7487 by NAT_4:9;
    7487 = 47*159 + 14; hence not 47 divides 7487 by NAT_4:9;
    7487 = 53*141 + 14; hence not 53 divides 7487 by NAT_4:9;
    7487 = 59*126 + 53; hence not 59 divides 7487 by NAT_4:9;
    7487 = 61*122 + 45; hence not 61 divides 7487 by NAT_4:9;
    7487 = 67*111 + 50; hence not 67 divides 7487 by NAT_4:9;
    7487 = 71*105 + 32; hence not 71 divides 7487 by NAT_4:9;
    7487 = 73*102 + 41; hence not 73 divides 7487 by NAT_4:9;
    7487 = 79*94 + 61; hence not 79 divides 7487 by NAT_4:9;
    7487 = 83*90 + 17; hence not 83 divides 7487 by NAT_4:9;
  end;
  then for n being Element of NAT st 1 < n & n*n <= 7487 & n is prime
  holds not n divides 7487 by XPRIMET1:46;
  hence thesis by NAT_4:14;
end;
