Find adjacent primes which differ by a square integer: Difference between revisions

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 </pre>
+=={{header|Ruby}}==
+<lang ruby>require "prime"
+Prime.each(1_000_000).each_cons(2) do |a, b|
+  diff = b - a
+  next unless diff > 36
+  isqrt = Integer.sqrt(diff)
+  puts "#{b} - #{a} = #{diff}" if isqrt*isqrt == diff
+end
+</lang>
+{{out}}
+<pre>89753 - 89689 = 64
+- 107377 = 64
+- 288583 = 64
+- 367957 = 64
+- 381103 = 64
+- 396733 = 100
+- 400759 = 64
+- 445363 = 64
+- 623107 = 64
+- 625699 = 64
+- 637003 = 64
+- 710713 = 64
+- 725209 = 64
+- 779413 = 64
+- 801883 = 64
+- 803749 = 64
+- 821677 = 64
+- 832519 = 64
+- 838249 = 100
+- 844777 = 64
+- 883807 = 64
+- 912103 = 64
+- 919447 = 64
+- 954763 = 64
+- 981823 = 64
+- 997813 = 64
+</pre>
 =={{header|Wren}}==
 {{libheader|Wren-math}}