I learn many things from this smaller secp256k1.

Enter uncompressed public key (default: 0479be667ef9dcbbac55a06295ce870b07029bfcdb2dce28d959f2815b16f81798483ada7726a3c 4655da4fbfc0e1108a8fd17b448a68554199c47d08ffb10d4b8):
042f8bde4d1a07209355b4a7250a5c5128e88b84bddc619ab7cba8d569b240efe4d8ac222636e5e 3d6d4dba9dda6c9c426f788271bab0d6840dca87d3aa6ac62d6

Three x values:
x1 = 21505829891763648114329055987619236494102133314575206970830385799158076338148
x2 = 23285849548026170226712523888619559634478006467037872208296602441247713932904
x3 = 71000409797526377082529405132449111724689844884027484860330595767503044400611

Two y values:
y1 = 98003708678762621233683240503080860129026887322874138805529884920309963580118
y2 = 17788380558553574189887744505607047724243097342766425233927699087598871091545
Enter private key for (x1, y1) = (21505829891763648114329055987619236494102133314575206970830385799158076338148, 98003708678762621233683240503080860129026887322874138805529884920309963580118): 5

Six public keys with private keys:
Public key 1: 042f8bde4d1a07209355b4a7250a5c5128e88b84bddc619ab7cba8d569b240efe4d8ac222636e5e 3d6d4dba9dda6c9c426f788271bab0d6840dca87d3aa6ac62d6 [Private key: 5]
  Validated: k1 matches
Public key 2: 04337b52e3acda49dff79f54fbccb94671a045693ee0d097cc138c694695a83668d8ac222636e5e 3d6d4dba9dda6c9c426f788271bab0d6840dca87d3aa6ac62d6 [Private key: 72798312578463789091060122408687194401800723498338030560477939572921828405753]
  Validated: k2 matches
Public key 3: 049cf8cecf391e958cb2ac03df28ea6865772f120342cdcd7c20cac14eb816d5e3d8ac222636e5e 3d6d4dba9dda6c9c426f788271bab0d6840dca87d3aa6ac62d6 [Private key: 42993776658852406332510862600000713451036840780736873822127223568596333088579]
  Validated: k3 matches
Public key 4: 042f8bde4d1a07209355b4a7250a5c5128e88b84bddc619ab7cba8d569b240efe42753ddd9c91a1 c292b24562259363bd90877d8e454f297bf235782c459539959 [Private key: 115792089237316195423570985008687907852837564279074904382605163141518161494332]
  Validated: k4 matches
Public key 5: 04337b52e3acda49dff79f54fbccb94671a045693ee0d097cc138c694695a836682753ddd9c91a1 c292b24562259363bd90877d8e454f297bf235782c459539959 [Private key: 42993776658852406332510862600000713451036840780736873822127223568596333088584]
  Validated: k5 matches
Public key 6: 049cf8cecf391e958cb2ac03df28ea6865772f120342cdcd7c20cac14eb816d5e32753ddd9c91a1 c292b24562259363bd90877d8e454f297bf235782c459539959 [Private key: 72798312578463789091060122408687194401800723498338030560477939572921828405758]
  Validated: k6 matches

Sum of private keys for y1 = 115792089237316195423570985008687907852837564279074904382605163141518161494337 (should be n or 2n)
Sum of private keys for y2 = 231584178474632390847141970017375815705675128558149808765210326283036322988674 (should be n or 2n)