Pith Number

pith:OHUH4CCD

pith:2016:OHUH4CCDAYNI3GR3HYZG4SLKQ6

not attested not anchored not stored refs pending

On the unboundedness of common divisors of distinct terms of the sequence $a_n=2^{2^n}+d$ for $d>1$

Tigran Hakobyan

arxiv:1601.04946 v2 · 2016-01-19 · 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{OHUH4CCDAYNI3GR3HYZG4SLKQ6}

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	2026-05-18T01:22:05.338952Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71e87e0843061a8d9a3b3e326e496a87bc246770a91229757487bd7f6bfbefa5

Aliases

arxiv: 1601.04946 · arxiv_version: 1601.04946v2 · doi: 10.48550/arxiv.1601.04946 · pith_short_12: OHUH4CCDAYNI · pith_short_16: OHUH4CCDAYNI3GR3 · pith_short_8: OHUH4CCD

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/OHUH4CCDAYNI3GR3HYZG4SLKQ6 \
  | 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: 71e87e0843061a8d9a3b3e326e496a87bc246770a91229757487bd7f6bfbefa5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "507bd0ed4a1ec61d8d1590c25819860b6bf7e6b1f53d3d9e0784583845a8ebe6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2016-01-19T15:00:46Z",
    "title_canon_sha256": "b3ee9325d964b82d024532b7d52a36561b551872eeea069d21e2b0e22184e8fd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1601.04946",
    "kind": "arxiv",
    "version": 2
  }
}