Pith Number

pith:PLKBWGBH

pith:2011:PLKBWGBHA2HNSZF23BSTABUQUZ

not attested not anchored not stored refs pending

On a Diophantine problem with one prime, two squares of primes and $s$ powers of two

Alessandro Languasco, Valentina Settimi

arxiv:1103.1985 v2 · 2011-03-10 · 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{PLKBWGBHA2HNSZF23BSTABUQUZ}

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	2026-05-18T03:37:53.382034Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ad41b1827068ed964bad865300690a651e4783c8dbe48714776462e445e8fdd

Aliases

arxiv: 1103.1985 · arxiv_version: 1103.1985v2 · doi: 10.48550/arxiv.1103.1985 · pith_short_12: PLKBWGBHA2HN · pith_short_16: PLKBWGBHA2HNSZF2 · pith_short_8: PLKBWGBH

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/PLKBWGBHA2HNSZF23BSTABUQUZ \
  | 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: 7ad41b1827068ed964bad865300690a651e4783c8dbe48714776462e445e8fdd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "19a59c6aae1bb835a482bf2eab87634c7d5643b1c6e44da2cfb84cf8119c4a27",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.NT",
    "submitted_at": "2011-03-10T10:33:59Z",
    "title_canon_sha256": "a6746e974a040f5e931d7f2a87accadd699087a81f29f50a7d84e14ab042e0b3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.1985",
    "kind": "arxiv",
    "version": 2
  }
}