
theorem
  7411 is prime
proof
  now
    7411 = 2*3705 + 1; hence not 2 divides 7411 by NAT_4:9;
    7411 = 3*2470 + 1; hence not 3 divides 7411 by NAT_4:9;
    7411 = 5*1482 + 1; hence not 5 divides 7411 by NAT_4:9;
    7411 = 7*1058 + 5; hence not 7 divides 7411 by NAT_4:9;
    7411 = 11*673 + 8; hence not 11 divides 7411 by NAT_4:9;
    7411 = 13*570 + 1; hence not 13 divides 7411 by NAT_4:9;
    7411 = 17*435 + 16; hence not 17 divides 7411 by NAT_4:9;
    7411 = 19*390 + 1; hence not 19 divides 7411 by NAT_4:9;
    7411 = 23*322 + 5; hence not 23 divides 7411 by NAT_4:9;
    7411 = 29*255 + 16; hence not 29 divides 7411 by NAT_4:9;
    7411 = 31*239 + 2; hence not 31 divides 7411 by NAT_4:9;
    7411 = 37*200 + 11; hence not 37 divides 7411 by NAT_4:9;
    7411 = 41*180 + 31; hence not 41 divides 7411 by NAT_4:9;
    7411 = 43*172 + 15; hence not 43 divides 7411 by NAT_4:9;
    7411 = 47*157 + 32; hence not 47 divides 7411 by NAT_4:9;
    7411 = 53*139 + 44; hence not 53 divides 7411 by NAT_4:9;
    7411 = 59*125 + 36; hence not 59 divides 7411 by NAT_4:9;
    7411 = 61*121 + 30; hence not 61 divides 7411 by NAT_4:9;
    7411 = 67*110 + 41; hence not 67 divides 7411 by NAT_4:9;
    7411 = 71*104 + 27; hence not 71 divides 7411 by NAT_4:9;
    7411 = 73*101 + 38; hence not 73 divides 7411 by NAT_4:9;
    7411 = 79*93 + 64; hence not 79 divides 7411 by NAT_4:9;
    7411 = 83*89 + 24; hence not 83 divides 7411 by NAT_4:9;
  end;
  then for n being Element of NAT st 1 < n & n*n <= 7411 & n is prime
  holds not n divides 7411 by XPRIMET1:46;
  hence thesis by NAT_4:14;
end;
