Default quantity of iterations used in wallets is 2048. Rising this quantity need to make it more secure in opposition to brute pressure assaults, however you'll have to keep this price. To entry your wallet with personalized PBKDF2 you should use this script (or comparable) to compute your BIP39 https://socialskates.com/story19709086/bip39-checksum-the-smart-trick-of-bip39-phrase-that-no-one-is-discussing