 3.28.20  7:36 pm the checker. I know of adding/subtracting 123 to check for 41 but none for any higher
for 43, try 301. for 47, try 799, although often 141 is easier i find. for 53, try 901. for 59, i like 1003. for 61, i don't know anything good for 61 except for just the triple which is kind of ugly. 67 is glorious, that's 201. for 71, i don't have much, but 213 isn't so bad. for 73 i have 511. for 79 i have 711. for 83 i don't have much better than 249 (just the triple) which is usually ok. 89 can be 901 which is nice. hope that helps