Pith Number

pith:7MSXRP2P

pith:2017:7MSXRP2PAPMP3YWMVFNKKOXWIO

not attested not anchored not stored refs pending

On perfect powers that are sums of two Fibonacci numbers

Florian Luca, Vandita Patel

arxiv:1706.10294 v1 · 2017-06-30 · 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{7MSXRP2PAPMP3YWMVFNKKOXWIO}

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	2026-05-18T00:41:08.935944Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb2578bf4f03d8fde2cca95aa53af643b297f4277d68f6572b88a2d6cab5ef3b

Aliases

arxiv: 1706.10294 · arxiv_version: 1706.10294v1 · doi: 10.48550/arxiv.1706.10294 · pith_short_12: 7MSXRP2PAPMP · pith_short_16: 7MSXRP2PAPMP3YWM · pith_short_8: 7MSXRP2P

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/7MSXRP2PAPMP3YWMVFNKKOXWIO \
  | 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: fb2578bf4f03d8fde2cca95aa53af643b297f4277d68f6572b88a2d6cab5ef3b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1f9b6b0889b5495b1a3cec4b13b8f07fc583813cfb09eadf400cf7ca4532adbf",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2017-06-30T17:52:55Z",
    "title_canon_sha256": "7980fb149bcd7c51b8d51b3d40ac35b81330a0ba154e7d5ea30c4e28b190f7bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.10294",
    "kind": "arxiv",
    "version": 1
  }
}