Tap every one of the
—
can you spot them all?
№ 1Primely is a free daily maths puzzle. Everyone gets the same grid of numbers each day, plus a category, such as prime numbers, square numbers or multiples of 7. Your job is to tap every number in the grid that belongs to the category, without tapping any that don't.
Tap a number you think belongs. If you're right it gets a tick; if you're wrong it's crossed out, you're told why (for example "51 isn't prime: 51 = 3 × 17"), and that slip uses up one of your six tries. The counter shows how many you've found out of how many are hidden. The categories follow the week: multiples of 5 on Monday, square numbers on Tuesday, primes under 50 on Wednesday, multiples of 7 on Thursday, primes under 100 on Friday and Sunday, and numbers whose digits add up to 10 on Saturday. The grid is 5×5 early in the week and 6×6 from Thursday, and it's full of near misses chosen to catch you out. Remember that 1 is never a prime number.
Find them all without a single slip and you earn 12 points; each wrong tap knocks it down to 10, 8, 6, 4 and then 2. A sixth wrong tap ends the day. Stuck? The helper reveals one hidden number, but it halves the day's score and is only available until your third slip.
Your play streak counts the days in a row you've played, and your solved streak counts the days in a row you've solved the puzzle. Play seven days running and you earn a 7-point bonus, or 14 points if you solved all seven. Miss a day and the streaks start again. A new puzzle arrives every day at midnight UTC.
More puzzles: all Streakly games · how scoring, streaks and badges work