1,397,999

1397999

Starting at 1,397,999, the Collatz iteration reaches 1 after 186 steps. The first transition is 4193998; the starting value is odd with 2 positive divisors.

Prime Factor Structure

Factorization String 1397999

Distinct Prime Factors 1

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 2

Divisor Sum (σ) 1,398,000

Proper Divisor Sum 1

Digit Sum / Digital Root 47 (Root: 2)

Adjacent Primes #1397989 ← → #1398011

Radix Representation

Decimal	1397999
Binary	101010101010011101111 (21 bits)
Octal	0o5252357
Hexadecimal	0x1554EF

Divisor Catalog (2)

1 1,397,999

Collatz Trajectory (186 steps to reach 1)

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

1,397,999 4,193,998 2,096,999 6,290,998 3,145,499 9,436,498 4,718,249 14,154,748 7,077,374 3,538,687 10,616,062 5,308,031 15,924,094 7,962,047 23,886,142 11,943,071 35,829,214 17,914,607 53,743,822 26,871,911 80,615,734 40,307,867 120,923,602 60,461,801 181,385,404 90,692,702 45,346,351 136,039,054 68,019,527 204,058,582 102,029,291 306,087,874 153,043,937 459,131,812 229,565,906 114,782,953 344,348,860 172,174,430 86,087,215 258,261,646 129,130,823 387,392,470 193,696,235 581,088,706 290,544,353 871,633,060 435,816,530 217,908,265 653,724,796 326,862,398 163,431,199 490,293,598 245,146,799 735,440,398 367,720,199 1,103,160,598 551,580,299 1,654,740,898 827,370,449 2,482,111,348

← Previous Integer #1,397,998 Browse Full Index Next Integer #1,398,000 →