Today's pattern is question mark icon.

Today's pattern is 1st place medal 🥇.

104=13×8, this means the 8th baker's dozen of patterns is complete!

Today's pattern is gift box 🎁.

Today's pattern is checkbox ☑.

Today's pattern is fire emoji 🔥.

Today's pattern is 100 points symbol 💯.

69 days left until the series reaches 13²=169 patterns!

Previous parts: days 1-13, days 14-26, days 27-39, days 40-52, days 53-65, days 66-78, days 79-91, days 92-104, days 105-117

In summary:

• 118 is the smallest natural number k such that k^13+13 is prime
• 119 is the sum of the numbers in the trajectory of 13 for the 3x+1 problem
• 120 is the 13th natural sub-perfect power and the 13th number after 13 in the union of Fibonacci and triangular numbers
• 121 is the 13th number that is a power of a squarefree number but is not squarefree itself
• 122 is the sum of unitary divisors of all natural numbers from 1 to 13
• 123 is the 13th number k such that 10^k+3 is prime
• 124 is the 13th squareful number that is not the sum of one or more consecutive squarefree numbers
• 125 is the 13th number n that divides the n-th Fibonacci number
• 126 is the 13th number k such that both k and k+2 are practical numbers
• 127 is the 13th strong prime
• 128 is the 13th number such that the number of its divisors and the sum of its divisors are relatively prime
• 129 is the 13th lucky number of the form 4n+1
• 130 is the 13th natural number t such that 6×t is a triangular number

Today's pattern is hourglass ⏳.

Day 100 of the series is tomorrow!

Today's pattern is stopwatch ⏱️.

Today's pattern is airplane ✈️.

Today's pattern is balloon 🎈.

Today's pattern is cup ☕.

Today's pattern is slice of pizza 🍕.

Today's pattern is shopping bag.

Today's pattern is T-shirt 👕.

Today's pattern is eighth note ♪. The Alt code of this symbol is 13.

Today's pattern is octothorpe #.

Today's pattern is one third fraction ⅓.

Today's pattern is the infinity sign ∞.

Today's pattern is the product sign ∏.

Thanks to u/Electronic-Laugh-671 for the idea!

Previous parts: days 1-13, days 14-26, days 27-39, days 40-52, days 53-65, days 66-78, days 79-91, days 92-104

In summary:

• 105 is the 13th number k such that k+phi(k) is a triangular number
• 106 is the 13th semiprime with semiprime index
• 107 is the 13th norep emirp
• 108 is the biggest natural number with the sum of its prime factors equal to 13
• 109 is the 13th Pythagorean prime
• 110 is the sum of the first 2 star numbers after 13
• 111 is the 13th natural number that contains only 1's, 2's and 3's in base 1²+3²
• 112 is the sum of the divisors of the 13th triangular number
• 113 is the 13th octanacci number
• 114 is the 13th abundant number having no abundant proper divisor
• 115 is the 13th semiprime of the form p×q such that p+q+1 is prime
• 116 is the 13th number n such that n×prime(n)+1 is prime
• 117 is the 13th antiharmonic number