About the Number 491 (four hundred ninety-one)

On 29 March 2017, MathBabbler read Millennials: Instagram the Most Narcissistic Social Media Platform. MathBabbler is Baby Boomer who uses Instagram and on 29 March 2017 he had 491 posts and 58 followers.

MathBabbler Number Analyst (MBNA) output:
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491 is natural, counting, whole, integer
491 is odd (not even)
491 is not extremely odd
491 proper divisors are: 1,
491 has 1 proper divisors
491 is deficient (sum of divisors is 1; ratio: 0.00203666)
491 is unhappy
491 is a Squarefree Number
491 is prime (not composite)
...Cousin prime with 487
...Sophie Germain prime with 983
...Truman Gerald (p+30) prime with 521
...Truman Gerald (p-30) prime with 461
...OEIS:002145 (4n+3; n=122)
...Eisenstein (3n-1; n=164)
491 is the sum of 15 consecutive primes
491 = 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43 + 47 + 53 + 59 + 61
491 in octal is 0753
491 in hexadecimal is 0x1eb
491 in binary is 111101011 (is odious)
491 nearest square numbers: -7...38 (484...529 [23])
sqrt(491) = 22.1585
ln(491) = 6.19644
log(491) = 2.69108
491! is 6.71624e+1109
491 is 156.29 Pi years
491 is 24 score and 11 years
491 written as a Roman numeral is CDXCI
491 is 246^2 - 245^2 and 246 + 245 = 491
491 is a multiple of 1 & it contains a 1 (A011531)
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491 reciprocal is 0.0020366598778004073319755600814663951120162932790224032586558044806517311608961303462321792260692464358452138492871690427698574338085539714867617107942973523421588594704684317718940936863543788187372708757637474541751527494908350305498981670061099796334012219959266802443991853360488798370672097759674134419551934826883910386965376782077393075356415478615071283095723014256619144602851323828920570264765784114052953156822810590631364562118126272912423625254582484725050916496945010183299389
remainders: 
1,10,100,18,180,327,324,294,485,431,382,383,393,2,20,200,36,360,163,157,97,479,371,273,275,295,4,40,400,72,229,326,314,194,467,251,55,59,99,8,80,309,144,458,161,137,388,443,11,110,118,198,16,160,127,288,425,322,274,285,395,22,220,236,396,32,320,254,85,359,153,57,79,299,44,440,472,301,64,149,17,170,227,306,114,158,107,88,389,453,111,128,298,34,340,454,121,228,316,214,176,287,415,222,256,105,68,189,417,242,456,141,428,352,83,339,444,21,210,136,378,343,484,421,282,365,213,166,187,397,42,420,272,265,195,477,351,73,239,426,332,374,303,84,349,53,39,390,463,211,146,478,361,173,257,115,168,207,106,78,289,435,422,292,465,231,346,23,230,336,414,212,156,87,379,353,93,439,462,201,46,460,181,337,424,312,174,267,215,186,387,433,402,92,429,362,183,357,133,348,43,430,372,283,375,313,184,367,233,366,223,266,205,86,369,253,75,259,135,368,243,466,241,446,41,410,172,247,15,150,27,270,245,486,441,482,401,82,329,344,3,30,300,54,49,490,481,391,473,311,164,167,197,6,60,109,108,98,489,471,291,455,131,328,334,394,12,120,218,216,196,487,451,91,419,262,165,177,297,24,240,436,432,392,483,411,182,347,33,330,354,103,48,480,381,373,293,475,331,364,203,66,169,217,206,96,469,271,255,95,459,171,237,406,132,338,434,412,192,447,51,19,190,427,342,474,321,264,185,377,333,384,403,102,38,380,363,193,457,151,37,370,263,175,277,315,204,76,269,235,386,423,302,74,249,35,350,63,139,408,152,47,470,281,355,113,148,7,70,209,126,278,325,304,94,449,71,219,226,296,14,140,418,252,65,159,117,188,407,142,438,452,101,28,280,345,13,130,318,234,376,323,284,385,413,202,56,69,199,26,260,145,468,261,155,77,279,335,404,112,138,398,52,29,290,445,31,310,154,67,179,317,224,276,305,104,58,89,399,62,129,308,134,358,143,448,61,119,208,116,178,307,124,258,125,268,225,286,405,122,238,416,232,356,123,248,25,250,45,450,81,319,244,476,341,464,221,246,5,50,9,90,409,162,147,488,461,191,437,442,1

Creator: Gerald Thurman [gthurman@gmail.com]
Created: 30 March 2017

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This work is licensed under a Creative Commons Attribution 3.0 United States License.