Pith Number

pith:2FZ3XCV4

pith:2026:2FZ3XCV4233DA3JK3JZNLQ6KMH

not attested not anchored not stored refs pending

Cullen and Woodall numbers in Padovan and Perrin sequences

Eric F. Bravo, Florian Luca, Herbert Batte

arxiv:2605.23084 v1 · 2026-05-21 · math.NT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2FZ3XCV4233DA3JK3JZNLQ6KMH}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-25T02:01:37.634761Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d173bb8abcd6f6306d2ada72d5c3ca61fc3f9f169c74d98042e4b39ae570cae8

Aliases

arxiv: 2605.23084 · arxiv_version: 2605.23084v1 · doi: 10.48550/arxiv.2605.23084 · pith_short_12: 2FZ3XCV4233D · pith_short_16: 2FZ3XCV4233DA3JK · pith_short_8: 2FZ3XCV4

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2FZ3XCV4233DA3JK3JZNLQ6KMH \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d173bb8abcd6f6306d2ada72d5c3ca61fc3f9f169c74d98042e4b39ae570cae8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "afe867ec5574f6ecafa0bac69bab8356c9d0bdbebbf81ac8150409def0db843b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2026-05-21T22:33:43Z",
    "title_canon_sha256": "eb67b2866ce9fac9869998ac1be25aa80c38b75c5f9681b654bba1ca19a1bd8f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.23084",
    "kind": "arxiv",
    "version": 1
  }
}