Strong's numbers

μετάνοια G3341

metánoia

met-an'-oy-ah

from μετανοέω; (subjectively) compunction (for guilt, including reformation); by implication, reversal (of (another's) decision):--repentance.

μετάνοια, -οίας, ἡ (< μετανοέω), [in LXX: Pr 14:15, Wi 11:23 12:10, 19, Si 44:16*;]

after-thought, change of mind, repentance: He 12:17; of repentance from sin, Mt 3:8, 11, Lk 3:8 15:7 24:47, Ac 26:20, II Co 7:9, 10; βάπτισμα (q.v.) μετανοίας, Mk 1:4, Lk 3:3, Ac 13:24 19:4; ἡ εἰς θεὸν μ., Ac 20:21; μ. ἀπὸ νεκρῶν ἔργων, He 6:1; εἰς μ. καλεῖν, Lk 5:32; id. ἄγειν, Ro 2:4; ἀνακαινίζειν, He 6:6; εἰς μ. χωρῆσαι, II Pe 3:9; μ. δοῦναι, Ac 5:31 11:18, II Ti 2:25.†

From G. Abbott-Smith, A Manual Greek Lexicon of the New Testament (1922), in the public domain.

Shown in the King James Version (KJV), whichever translation you read in — it is the text these numbers are tagged against.

Matthew 3:8
Bring forth therefore fruits meet for repentance:
Matthew 3:11
I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire:
Matthew 9:13
But go ye and learn what that meaneth, I will have mercy, and not sacrifice: for I am not come to call the righteous, but sinners to repentance.
Mark 1:4
John did baptize in the wilderness, and preach the baptism of repentance for the remission of sins.
Mark 2:17
When Jesus heard it, he saith unto them, They that are whole have no need of the physician, but they that are sick: I came not to call the righteous, but sinners to repentance.
Luke 3:3
And he came into all the country about Jordan, preaching the baptism of repentance for the remission of sins;
Luke 3:8
Bring forth therefore fruits worthy of repentance, and begin not to say within yourselves, We have Abraham to our father: for I say unto you, That God is able of these stones to raise up children unto Abraham.
Luke 5:32
I came not to call the righteous, but sinners to repentance.
Luke 15:7
I say unto you, that likewise joy shall be in heaven over one sinner that repenteth, more than over ninety and nine just persons, which need no repentance.
Luke 24:47
And that repentance and remission of sins should be preached in his name among all nations, beginning at Jerusalem.