A list of PPCG questions and whether or not they have builtins in Mathematica

Builtins.txt

106945	xor-two-monochrome-images                              True
66127	catalan-numbers                                        True
106612	arranging-bubbles                                      True
65329	is-q-a-quadratic-residue-of-n                          True
106423	find-an-eulerian-circuit                               True
104310	locally-invert-a-polynomial                            True
75529   print-the-difference-in-the-thue-morse-sequence        True
66911	find-the-xor-primes                                    True
57617	is-this-number-a-prime                                 True
84260	add-two-numbers                                        True
106182	multiply-two-numbers                                   True
58026	am-i-perfect-number                                    True
75277	evaluate-the-riemann-zeta-function-at-a-complex-number True
57146	the-coin-problem                                       True
107181	contiguous-block-count                                 True
51564	is-my-graph-planar                                     True
107274	longest-cycle-in-a-graph                               True
63535	are-these-trees-isomorphic                             True
8647	determine-number-of-unconnected-components             True
607 	find-the-factorial                                     True
93739	compute-the-carmichael-function                        True
84260	add-two-numbers                                        True
106182	multiply-two-numbers                                   True
108804	is-this-sequence-graphic                               True
85141	draw-the-national-flag-of-iceland                      True
99688	polygonal-numbers                                      True
86944   Fibonacci-orial                                        True
104590  calculate-the-prime-factors                            True
4971	pluralize-it                                           True
77958	convert-to-roman-numeral                               True
34505	simulate-rule-110                                      True
71631   upgoat-or-downgoat                                     True
103743	number-of-prime-knots-with-n-crossings                 True
101638  shortest-code-to-produce-non-deterministic-output      True
23423	mandelbrot-image-in-every-language                     True
113448	is-this-even-or-odd                                    True
84444	find-the-nth-decimal-of-pi                             True
6781	calculate-golden-ratio                                 True
9080	calculate-ex-and-lnx                                   True
114408  extract-an-rgb-channel-of-an-image                     True
106963	find-the-identity-sandpile                             False
50240	xor-multiplication                                     False
22144	images-with-all-colors                                 False
89726	golf-a-brain-flak-integer                              False
67701	draw-the-pentaflake                                    False
71822	filter-out-and-add-up                                  False
52175	triangular-square-numbers                              False