Penta, Hexa, Hepta & Octa Numbers Explained — Rarity Chart with Prices

Penta, hexa, hepta, and octa numbers are mobile numbers where the same digit repeats 5, 6, 7, or 8 times in a row — the rarest and most valuable category of VIP numbers in India. A penta ends in five identical digits (XXXXX-99999), a hexa in six (XXXX-999999), and so on. Each additional repeating digit shrinks supply roughly ten-fold, which is why prices jump from tens of thousands for a penta to tens of lakhs for an octa.

Here's the complete breakdown of the repeating-digit hierarchy, what each tier costs, and why serious buyers treat these numbers like fixed-supply collectibles.

The Repeating-Digit Hierarchy

Within any operator's 1-lakh number series, only ten numbers end in a given penta, one in a given hexa — and hepta/octa numbers exist only where the series prefix itself aligns. That mathematical scarcity is the entire value engine.

What Moves the Price Within Each Tier

Two pentas can differ in price by 5–10x. The premium drivers:

1. Which digit repeats. In the Indian market, 9 and 8 command the highest premiums, followed by 7, 1, and 0. Nines signify completeness; eights connect to wealth symbolism. A 99999 penta will outprice a 44444 penta several times over — partly because numerology buyers avoid 4 and 8 totals, thinning demand for some digits.

2. Position — ending beats middle. XXXXX-99999 (ending penta) is the format people see and remember; 99999 buried mid-number carries a fraction of the value.

3. The prefix quality. A penta sitting on a clean, sequential, or matching prefix (98888-99999) becomes a "combo" number and moves into auction territory.

4. Operator and circle. Premium metro circles and Jio/Airtel series typically price above the same pattern elsewhere.

Why Collectors and Businesses Chase These Numbers

Instant recall. A hexa ending needs to be heard once. For businesses that advertise a call-in number — dealerships, clinics, property, logistics — that recall converts directly into calls.

Status signaling. Like a fancy vehicle registration plate, a penta/hexa number is visible in every call, card exchange, and WhatsApp contact save.

Fixed supply. Operators cannot mint more of these; every hexa that gets locked into long-term ownership permanently reduces circulating supply. This is why well-chosen repeating-digit numbers have historically resold at or above purchase price — the closest thing the number market has to blue-chip assets. (See the record sales in our upcoming roundup of India's most expensive numbers.)

Penta vs Mirror vs 786: Which Should You Buy?

•     Choose a penta/hexa if budget allows and maximum recall/status is the goal.

•     Choose a mirror or ABAB pattern for 80% of the memorability at 10–20% of the price — see the full price comparison by category.

•     Choose a 786 number if cultural/spiritual significance matters most — covered in our 786 series guide.

Buying a Penta or Hexa Safely

At these price points, transaction safety is everything. The rules don't change, but the stakes do: GST-registered seller, UPC + invoice included, payment on-platform, and porting completed with your KYC — the full checklist is in our safety guide. For lakh-plus numbers, NumberATM also supports assisted transfers where our team coordinates the port end-to-end.

Browse live penta and hexa inventory across Jio, Airtel, Vi, and BSNL on NumberATM — filtered by digit, ending, and budget.

Frequently Asked Questions

What is a penta number?

A mobile number in which the same digit repeats five times consecutively, usually at the end — for example, 98XXX-77777.

Why are hexa numbers so expensive?

Within any 1-lakh number series only one number carries a given hexa ending, so supply is mathematically fixed while demand from businesses and collectors keeps rising.

Which repeating digit is most valuable?

9 is the most premium repeating digit in the Indian market, followed by 8 and 7. Digit choice can swing prices 5–10x within the same tier.

Do octa numbers really exist?

Yes, but only where a series prefix aligns to allow eight identical digits — a handful per operator, which is why they trade at ₹25 lakh and above.

Are penta numbers a good investment?

They have historically held value well due to fixed supply and steady demand, though like any collectible, resale value depends on market conditions and isn't guaranteed.