diff --git a/append_digit_primes/Cargo.lock b/append_digit_primes/Cargo.lock
deleted file mode 100644
index fbd0af9..0000000
--- a/append_digit_primes/Cargo.lock
+++ /dev/null
@@ -1,91 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "append_digit_primes"
-version = "0.1.0"
-dependencies = [
- "primal",
-]
-
-[[package]]
-name = "autocfg"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
-
-[[package]]
-name = "hamming"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65043da274378d68241eb9a8f8f8aa54e349136f7b8e12f63e3ef44043cc30e1"
-
-[[package]]
-name = "num-integer"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d59457e662d541ba17869cf51cf177c0b5f0cbf476c66bdc90bf1edac4f875b"
-dependencies = [
- "autocfg",
- "num-traits",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
-dependencies = [
- "autocfg",
-]
-
-[[package]]
-name = "primal"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7bf9e0aea92a2e2a931fafb1b5d4c6e438197bbca4943a9984b3327fb8e3b5d0"
-dependencies = [
- "primal-check",
- "primal-estimate",
- "primal-sieve",
-]
-
-[[package]]
-name = "primal-bit"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2837edc85364907810b0ec880f1010dab1a9cc6e75bacb3655c7fd22e125ec1b"
-dependencies = [
- "hamming",
-]
-
-[[package]]
-name = "primal-check"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01419cee72c1a1ca944554e23d83e483e1bccf378753344e881de28b5487511d"
-dependencies = [
- "num-integer",
-]
-
-[[package]]
-name = "primal-estimate"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12e07b550a7cbfcaa567bcd28042919548016ad615b5731633fa5239992d853f"
-
-[[package]]
-name = "primal-sieve"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd0113d948c8f955a7ae96520023fe1e730eadbf26e67c4452f801a485e9d357"
-dependencies = [
- "primal-bit",
- "primal-estimate",
- "smallvec",
-]
-
-[[package]]
-name = "smallvec"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
diff --git a/insert_digit_anywhere_primes/Cargo.lock b/insert_digit_anywhere_primes/Cargo.lock
deleted file mode 100644
index 89a8a26..0000000
--- a/insert_digit_anywhere_primes/Cargo.lock
+++ /dev/null
@@ -1,91 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "autocfg"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
-
-[[package]]
-name = "hamming"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65043da274378d68241eb9a8f8f8aa54e349136f7b8e12f63e3ef44043cc30e1"
-
-[[package]]
-name = "insert_digit_anywhere_primes"
-version = "0.1.0"
-dependencies = [
- "primal",
-]
-
-[[package]]
-name = "num-integer"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d59457e662d541ba17869cf51cf177c0b5f0cbf476c66bdc90bf1edac4f875b"
-dependencies = [
- "autocfg",
- "num-traits",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
-dependencies = [
- "autocfg",
-]
-
-[[package]]
-name = "primal"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7bf9e0aea92a2e2a931fafb1b5d4c6e438197bbca4943a9984b3327fb8e3b5d0"
-dependencies = [
- "primal-check",
- "primal-estimate",
- "primal-sieve",
-]
-
-[[package]]
-name = "primal-bit"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2837edc85364907810b0ec880f1010dab1a9cc6e75bacb3655c7fd22e125ec1b"
-dependencies = [
- "hamming",
-]
-
-[[package]]
-name = "primal-check"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01419cee72c1a1ca944554e23d83e483e1bccf378753344e881de28b5487511d"
-dependencies = [
- "num-integer",
-]
-
-[[package]]
-name = "primal-estimate"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12e07b550a7cbfcaa567bcd28042919548016ad615b5731633fa5239992d853f"
-
-[[package]]
-name = "primal-sieve"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd0113d948c8f955a7ae96520023fe1e730eadbf26e67c4452f801a485e9d357"
-dependencies = [
- "primal-bit",
- "primal-estimate",
- "smallvec",
-]
-
-[[package]]
-name = "smallvec"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"
diff --git a/prepend_digit_primes/Cargo.lock b/prepend_digit_primes/Cargo.lock
deleted file mode 100644
index 90a58d7..0000000
--- a/prepend_digit_primes/Cargo.lock
+++ /dev/null
@@ -1,91 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-[[package]]
-name = "autocfg"
-version = "1.0.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
-
-[[package]]
-name = "hamming"
-version = "0.1.3"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "65043da274378d68241eb9a8f8f8aa54e349136f7b8e12f63e3ef44043cc30e1"
-
-[[package]]
-name = "num-integer"
-version = "0.1.43"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8d59457e662d541ba17869cf51cf177c0b5f0cbf476c66bdc90bf1edac4f875b"
-dependencies = [
- "autocfg",
- "num-traits",
-]
-
-[[package]]
-name = "num-traits"
-version = "0.2.12"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
-dependencies = [
- "autocfg",
-]
-
-[[package]]
-name = "prepend_digit_primes"
-version = "0.1.0"
-dependencies = [
- "primal",
-]
-
-[[package]]
-name = "primal"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7bf9e0aea92a2e2a931fafb1b5d4c6e438197bbca4943a9984b3327fb8e3b5d0"
-dependencies = [
- "primal-check",
- "primal-estimate",
- "primal-sieve",
-]
-
-[[package]]
-name = "primal-bit"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2837edc85364907810b0ec880f1010dab1a9cc6e75bacb3655c7fd22e125ec1b"
-dependencies = [
- "hamming",
-]
-
-[[package]]
-name = "primal-check"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "01419cee72c1a1ca944554e23d83e483e1bccf378753344e881de28b5487511d"
-dependencies = [
- "num-integer",
-]
-
-[[package]]
-name = "primal-estimate"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12e07b550a7cbfcaa567bcd28042919548016ad615b5731633fa5239992d853f"
-
-[[package]]
-name = "primal-sieve"
-version = "0.3.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bd0113d948c8f955a7ae96520023fe1e730eadbf26e67c4452f801a485e9d357"
-dependencies = [
- "primal-bit",
- "primal-estimate",
- "smallvec",
-]
-
-[[package]]
-name = "smallvec"
-version = "1.4.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"