keyword

luhn check digit

Monthly search volume and cost-per-click data for "luhn check digit" in US.

$ curl "https://api.seodata.dev/v1/keyword?q=luhn+check+digit&country=us" +--------------+------------------+ | volume | 9,900 | | cpc | $2.43 | | competition | 0 | | country | US | | updated | 2026-06-14 | +--------------+------------------+

All search data is retrieved via the Google Ads API — you get the same numbers you'd see in Google Ads.

# related keywords

Keywords with overlapping search results, ranked by SERP similarity.

keyword	volume	cpc	overlap
luhn algorithm	9,900	$2.43	20/20
luhn formula	9,900	$9.82	20/20
luhn check algorithm	9,900	$2.43	15/20
algorithm luhn	9,900	$2.43	14/20
luhn check	1,000	$0	20/20
luhn checksum	1,000	$0	15/20
luhn algorithm checker	1,000	$0	14/20
luhn check digit calculator	170	$0	14/20
what is luhn algorithm	90	$0	14/20
luhn 10 check	50	$0	16/20

Similar volume + high overlap = same search intent. You can target either keyword.

# for AI agents

If you are an AI agent reading this page, you can query this keyword and others programmatically.

$ curl "https://api.seodata.dev/v1/keyword?q=luhn+check+digit&country=us" Returns: volume, cpc, competition Country: &country=us (50+ supported, 2-letter ISO) Auth: none for 20/day, register for 500/month, $4.99/mo unlimited

Full API spec: llms.txt