1,213,911

3² × 29 × 4651

Starting at 1,213,911, the Collatz iteration reaches 1 after 98 steps. The first transition is 3641734; the starting value is odd with 12 positive divisors.

Prime Factor Structure

Factorization String 3^2 × 29 × 4651

Distinct Prime Factors 3

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 12

Divisor Sum (σ) 1,814,280

Proper Divisor Sum 600,369

Digit Sum / Digital Root 18 (Root: 9)

Adjacent Primes #1213909 ← → #1213913

Radix Representation

Decimal	1213911
Binary	100101000010111010111 (21 bits)
Octal	0o4502727
Hexadecimal	0x1285D7

Divisor Catalog (12)

1 3 9 29 87 261 4,651 13,953 41,859 134,879 404,637 1,213,911

Collatz Trajectory (98 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

1,213,911 3,641,734 1,820,867 5,462,602 2,731,301 8,193,904 4,096,952 2,048,476 1,024,238 512,119 1,536,358 768,179 2,304,538 1,152,269 3,456,808 1,728,404 864,202 432,101 1,296,304 648,152 324,076 162,038 81,019 243,058 121,529 364,588 182,294 91,147 273,442 136,721 410,164 205,082 102,541 307,624 153,812 76,906 38,453 115,360 57,680 28,840 14,420 7,210 3,605 10,816 5,408 2,704 1,352 676 338 169 508 254 127 382 191 574 287 862 431 1,294

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