Determine if a number is prime or list its prime factors. Input any integer between 0 and 999,999,999,999. Identify the prime ordinality of a prime number, showing its position in the sequence of primes.
by Bruce Schechter★ 4.926 ratingsUtilitiesFreeData updated 2026-09-26
Calculate dates for specific years. Determine in which years fell on a chosen day and month. Select a date using a spinning wheel to find corresponding dates.
This app measures colors using the iPhone camera or photos. It identifies colors with Japanese Industrial Standards (JIS) names and provides technical values like RGB, CIELAB, and CMYK.
Determines minimum conductor size and recommends and cable types based on installation requirements. Follows National Electrical Code® standards. Calculates ampacity and voltage drop. Supports various wiring methods and conductor materials.
