1,359,215

5 × 11 × 13 × 1901

Starting at 1,359,215, the Collatz iteration reaches 1 after 230 steps. The first transition is 4077646; the starting value is odd with 16 positive divisors.

Prime Factor Structure

Factorization String 5 × 11 × 13 × 1901

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 1,917,216

Proper Divisor Sum 558,001

Digit Sum / Digital Root 26 (Root: 8)

Adjacent Primes #1359209 ← → #1359223

Radix Representation

Decimal	1359215
Binary	101001011110101101111 (21 bits)
Octal	0o5136557
Hexadecimal	0x14BD6F

Divisor Catalog (16)

1 5 11 13 55 65 143 715 1,901 9,505 20,911 24,713 104,555 123,565 271,843 1,359,215

Collatz Trajectory (230 steps to reach 1)

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

1,359,215 4,077,646 2,038,823 6,116,470 3,058,235 9,174,706 4,587,353 13,762,060 6,881,030 3,440,515 10,321,546 5,160,773 15,482,320 7,741,160 3,870,580 1,935,290 967,645 2,902,936 1,451,468 725,734 362,867 1,088,602 544,301 1,632,904 816,452 408,226 204,113 612,340 306,170 153,085 459,256 229,628 114,814 57,407 172,222 86,111 258,334 129,167 387,502 193,751 581,254 290,627 871,882 435,941 1,307,824 653,912 326,956 163,478 81,739 245,218 122,609 367,828 183,914 91,957 275,872 137,936 68,968 34,484 17,242 8,621

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