141 = 1 + 2 + 3 × 4 + 5 × 6 + 7 + 89
141 = 9 + 87 + 6 × 5 + 4 × 3 + 2 + 1
141 = 0^2 − 1^7 + 2^8 − 3^9 + 4^5 + 5^6 + 6^1 + 7^4 + 8^3 + 9^0
141 divides 46^2 - 1.
141 = (11 + 1)(1+1) − 1 − 1 − 1
141 = 22 − 2 + (22/2)2
141 = 33 + 3 × (33 + 3)
141 = 44 − 4 − 444/4
141 = 5 × 5 + 5 + 555/5 = ((5)!+((5+(5+.5))/.5))
141 = 6 × 6 − 6 + 666/6
141 = ((7 + 7) × (77 − 7) + 7)/7
141 = 88 + 8 × 8 − 88/8
141 = 9 × (9 + 9) − 9 − (99 + 9)/9
Number of fractions in Farey series of order 21: 0/1, 1/21, 1/20, 1/19, 1/18, 1/17, 1/16, 1/15, 1/14, 1/13, 1/12, 1/11, 2/21, 1/10, 2/19, 1/9, 2/17, 1/8, 2/15, 1/7, 3/20, 2/13, 3/19, 1/6, 3/17, 2/11, 3/16, 4/21, 1/5, 4/19, 3/14, 2/9, 3/13, 4/17, 5/21, 1/4, 5/19, 4/15, 3/11, 5/18, 2/7, 5/17, 3/10, 4/13, 5/16, 6/19, 1/3, 7/20, 6/17, 5/14, 4/11, 7/19, 3/8, 8/21, 5/13, 7/18, 2/5, 7/17, 5/12, 8/19, 3/7, 7/16, 4/9, 9/20, 5/11, 6/13, 7/15, 8/17, 9/19, 10/21, 1/2, 11/21, 10/19, 9/17, 8/15, 7/13, 6/11, 11/20, 5/9, 9/16, 4/7, 11/19, 7/12, 10/17, 3/5, 11/18, 8/13, 13/21, 5/8, 12/19, 7/11, 9/14, 11/17, 13/20, 2/3, 13/19, 11/16, 9/13, 7/10, 12/17, 5/7, 13/18, 8/11, 11/15, 14/19, 3/4, 16/21, 13/17, 10/13, 7/9, 11/14, 15/19, 4/5, 17/21, 13/16, 9/11, 14/17, 5/6, 16/19, 11/13, 17/20, 6/7, 13/15, 7/8, 15/17, 8/9, 17/19, 9/10, 19/21, 10/11, 11/12, 12/13, 13/14, 14/15, 15/16, 16/17, 17/18, 18/19, 19/20, 20/21, 1/1
Palindrome k such that 3k + 1 is also a palindrome.
Number k such that (38*10^k + 349)/9 is prime.
Semiprime (Product of 2 Primes)
Factors: 1, 3, 47, 141
One hundred forty-one
Representations, Binary to Hexadecimal:
10001101_2
12020_3
2031_4
1031_5
353_6
261_7
215_8
166_9
119_11
b9_12
ab_13
a1_14
96_15
8d_16
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